C O M PI L E D & D O C U M E N TE D BY: M O HA M MA D A L- FO U DA R I SEIKO 1968 DIVER MASTER DIRECTORY Official Reference & Valuation Guide (1968–2026) O F F I C I A L LY S P O N S O R E D BY: JA PA N ES E WATC H CO L L ECTO R S 1. THE VINTAGE ARCHIVAL ORIGIN & DIRECT PROFESSIONAL MONOBLOC LINEAGE (1968–2018) The foundational 300m Hi-Beat standard of 1968 and the modern Marinemaster 300 monobloc era (Cal. 6159A & 8L35). REFERENCE CALIBER YEAR HISTORICAL SPECS & CASEWORK LAUNCH MSRP PRE-OWNED COLLECTOR / NOS 6159-7000 6159-7001 6159A (36k) 1968–69 Definitive 1968 baseline; 300m monobloc case, screw crown at 4:00, unidirectional timing bezel, gilt dial. ~¥38,000 (Archive Estimate) $4,500–$7,500 (1,385–2,310 KD) Discontinued (Auctions) $10k–$16k+ (NOS) SBDX003 8L35 2000 Historical Collection "Year 2000" LE (500 pcs); gilt accents, 300m monobloc case, dual-curved Hardlex. ¥200,000 (~$1,850) (570 KWD Launch) $2,800–$3,800 (860–1,170 KD) Discontinued (Grail) $5,000–$6,800 (NOS) SBDX001 8L35 2000–15 Modern Marinemaster Professional 300M baseline; monobloc case, dual Hardlex, unsigned knurled crown. ¥250,000 (~$2,300) (710 KWD Launch) $1,800–$2,600 (555–800 KD) Discontinued (Cult) $2,700–$3,500 (NOS) SBDX012 8L35 2015 50th Diver Anniv LE (1,000 pcs); vintage gilt layout, gold bezel markers, 300m monobloc case. ¥280,000 + tax (~$2,400 / 740 KD) $2,900–$3,900 (895–1,200 KD) Discontinued (High Premium) $4,500–$5,800 (NOS) SBDX017 8L35 2015–18 Technical update to SBDX001; DiaShield surface coating, laser-etched "X" on crown, upgraded LumiBrite. ¥270,000 (~$2,450) (755 KWD Launch) $1,850–$2,450 (570–755 KD) Discontinued (Steady) $2,750–$3,500 (NOS) 2. FAITHFUL HISTORICAL RE- CREATIONS (36,000 VPH HI-BEAT ) (2018–2020) Faithful historical re-creations featuring Seiko 36,000 vph Hi-Beat movements and 300m Saturation Diver ratings. REFERENCE CALIBER YEAR HISTORICAL SPECS & CASEWORK LAUNCH MSRP PRE-OWNED GREY / NOS SLA025 SBEX007 8L55 (36k) 2018 The 1968 Automatic Diver’s Re-creation (1,500 pcs); 44.8mm monobloc case, 300m Saturation, waffle strap. $5,400 / ¥550,000 (1,665 KWD Launch) $3,600–$4,600 (1,110–1,415 KD) $4,800–$5,400 (Grey) $5,800–$6,800 (NOS) SLA039 SBEX011 8L55 (36k) 2020 The 1968 Professional Diver’s 300m Re- creation (1,100 pcs); Ever-Brilliant Steel, 44.8x15.7mm, blue-grey dial. $6,800 / ¥700,000 (2,095 KWD Launch) $4,200–$5,100 (1,295–1,570 KD) $5,200–$6,000 (Grey) $6,500–$7,500 (NOS) S E I KO 1 9 6 8 D IVE R MASTE R REF E RE N C E & VA LUATI O N G U I DE ( 1 9 6 8 – 2 0 2 6 ) | PAG E 2 C O M PI L E D & D O C U M E N TE D BY: M O HA M MA D A L- FO U DA R I SEIKO 1968 DIVER MASTER DIRECTORY Official Reference & Valuation Guide (1968–2026) O F F I C I A L LY S P O N S O R E D BY: JA PA N ES E WATC H CO L L ECTO R S 3. MODERN MARINEMASTER 1968 HERITAGE: CERAMIC MM300 ERA (2018–2024) Upgraded professional monobloc platform with zirconia ceramic bezels, sapphire crystals, and Caliber 8L35. REFERENCE CALIBER YEAR TECHNICAL FEATURES & BEZEL ARCHITECTURE LAUNCH MSRP PRE-OWNED GREY / FULL SET SLA019 SBDX021 8L35 2018 1968 Commemorative LE (1,968 pcs); zirconia ceramic bezel insert, deep Yakushima green dial, 300m mono. $3,250 / ¥320,000 (1,000 KWD Launch) $2,600–$3,300 (800–1,015 KD) Discontinued (LE) $3,800–$4,600 SLA021 SBDX023 8L35 2018–24 Core MM300 successor; gloss black dial, ceramic bezel insert, sapphire crystal, gold seconds, 300m monobloc. $3,100 / ¥320,000 (955 KWD Launch) $1,750–$2,200 (540–680 KD) $2,250–$2,600 (Grey) $2,650–$3,000 SLA023 SBDX025 8L35 2019–24 Core MM300 marine blue sunburst dial, matching blue ceramic bezel insert, sapphire, 300m monobloc. $3,100 / ¥320,000 (955 KWD Launch) $1,750–$2,200 (540–680 KD) $2,250–$2,650 (Grey) $2,700–$3,100 SLA047 SBDX043 8L35 2021 140th Anniversary LE (3,000 pcs); textured Iriomote forest green dial, black ceramic insert, 300m mono. $3,200 / ¥330,000 (985 KWD Launch) $2,100–$2,650 (645–815 KD) $2,600–$2,950 (Grey) $3,000–$3,450 SLA053 / 059 8L35 2021 U.S. Special Editions (Seigaiha wave); black hard-coated monobloc case, blue or burgundy red wave dials. ~$3,300 (1,015 KWD Launch) $2,300–$3,100 (710–955 KD) $2,800–$3,400 (Grey) $3,300–$4,300 4. NEX T- GEN MARINEMASTER 1968 HERITAGE & FLAGSHIP 8L45 LINEAGE (2024–2026) Slimmer 42.6mm case profile, screw caseback architecture, and the Caliber 8L45 flagship line. REFERENCE CALIBER YEAR TECHNICAL FEATURES & BEZEL ARCHITECTURE LAUNCH MSRP PRE-OWNED GREY / FULL SET SLA077 SBDX059 8L35 2024–26 Marinemaster 1968 Heritage; 42.6mm case, matte black dial, date at 4:30, 300m WR, screw-down crown & back. $2,900 / ¥429,000 (895 KWD Launch) $2,100–$2,450 (645–755 KD) $2,450–$2,750 (Grey) $2,800–$3,000 SLA079 SBDX061 8L35 2024–26 Marinemaster 1968 Heritage; 42.6mm case, matte white dial, ceramic bezel, 300m WR, screw crown & back. $2,900 / ¥429,000 (895 KWD Launch) $2,150–$2,500 (660–770 KD) $2,500–$2,800 (Grey) $2,850–$3,050 HBF001 HBF001J1 8L45 (72h) 2026 Flagship 1968 Heritage; Cal. 8L45 (+10/-5 s/ d), 42.6x14.1mm, Solid & Slide clasp (16mm adj.), 300m WR. $3,600 / €3,800 (1,110 KD / ¥528k) Current Release (Pre-Owned N/A) $3,350–$3,600 (Parallel) $3,600–$3,900 HBF002 HBF002J1 8L45 (72h) 2026 JAMSTEC LE (1,000 pcs); Cal. 8L45 (+10/-5 s/d), deep-sea motif dial, 42.6x14.1mm, Solid & Slide clasp. $3,900 / €4,100 (1,200 KD / ¥572k) Current Release (Pre-Owned N/A) $3,800–$4,200 (Parallel) $4,200–$4,800 S E I KO 1 9 6 8 D IVE R MASTE R REF E RE N C E & VA LUATI O N G U I DE ( 1 9 6 8 – 2 0 2 6 ) | PAG E 3 C O M PI L E D & D O C U M E N TE D BY: M O HA M MA D A L- FO U DA R I SEIKO 1968 DIVER MASTER DIRECTORY Official Reference & Valuation Guide (1968–2026) O F F I C I A L LY S P O N S O R E D BY: JA PA N ES E WATC H CO L L ECTO R S 5. 1968 HERITAGE DIVER'S GMT LINEAGE (CALIBER 6R54 — 72H RESERVE) (2023–2026) Dual-time mechanical executions with ceramic bezels, 24h chapter rings, and the progression from 200m to 300m WR. REFERENCE CALIBER YEAR WATER RESISTANCE, BEZEL & CASE FEATURES LAUNCH MSRP PRE-OWNED GREY / FULL SET SPB381 SBEJ009 6R54 GMT 2023–26 200m Diver's WR; marine green dial, green ceramic timing bezel, gold-tone GMT hand, 42.0mm case. $1,500 / ¥209,000 (460 KWD Launch) $950–$1,150 (295–355 KD) $1,150–$1,300 (Grey) $1,350–$1,500 SPB383 SBEJ011 6R54 GMT 2023–26 200m Diver's WR; matte black dial, black ceramic timing bezel, gold-tone GMT hand, 42.0mm case. $1,500 / ¥209,000 (460 KWD Launch) $950–$1,150 (295–355 KD) $1,150–$1,300 (Grey) $1,350–$1,500 SPB385 SBEJ013 6R54 GMT 2023 200m Diver's WR; Seiko 110th Anniv LE (4,000 pcs); ice-blue textured dial, extra Seichu strap. $1,700 / ¥231,000 (525 KWD Launch) $1,150–$1,400 (355–430 KD) $1,380–$1,550 (Grey) $1,600–$1,850 SPB439 SPB439J1 6R54 GMT 2024 200m Diver's WR; Save the Ocean LE (1,500 pcs); polar white frost-textured dial, ice-blue GMT hand. Verified Reference (MSRP Pending) $1,100–$1,300 (340–400 KD) $1,280–$1,450 (Grey) $1,500–$1,700 SPB509 SBEJ025 6R54 GMT 2025 300m Diver's WR; Seiko Diver 60th Anniv LE (6,000 pcs); marine blue dial, 15mm slide-extension clasp. $1,800 / ¥253,000 (555 KWD Launch) $1,250–$1,450 (385–445 KD) $1,450–$1,650 (Grey) $1,700–$1,900 SPB519 SPB519J1 6R54 GMT 2025–26 300m Diver's WR; upgraded Core GMT, black dial, ceramic bezel, 6-step (~15mm) slide-adjusting clasp. $1,700 / ¥242,000 (525 KWD Launch) $1,150–$1,350 (355–415 KD) $1,350–$1,500 (Grey) $1,550–$1,700 SPB534 SBEJ027 6R54 GMT 2025–26 300m Diver's WR; 1968 Heritage GMT LE (500 pcs); (+25/-15 s/d), 42x13.3mm, vintage gilt accents. $1,750 / ¥253,000 (540 KWD Launch) $1,300–$1,500 (400–460 KD) $1,500–$1,680 (Grey) $1,750–$2,000 HBC001 HBC002 6R54 GMT 2026 300m Diver's WR; 42.0x13.3mm, black or green dial, ceramic, 6-step (15mm) on-the- fly micro-adjust clasp. $1,700 US / $1,800 ME (525–555 KD Launch) Current Release (Pre-Owned N/A) $1,500–$1,650 (Parallel) $1,700–$1,850 S E I KO 1 9 6 8 D IVE R MASTE R REF E RE N C E & VA LUATI O N G U I DE ( 1 9 6 8 – 2 0 2 6 ) | PAG E 4 C O M PI L E D & D O C U M E N TE D BY: M O HA M MA D A L- FO U DA R I SEIKO 1968 DIVER MASTER DIRECTORY Official Reference & Valuation Guide (1968–2026) O F F I C I A L LY S P O N S O R E D BY: JA PA N ES E WATC H CO L L ECTO R S 6. 1968 DIVER'S MODERN RE-INTERPRETATION (8L35 & MM200 PLATFORMS) Mainstream & high-end interpretations; 200m Diver's WR with a screw-down crown and screw caseback architecture. A) EVER-BRILLIANT STEEL HIGH-END TIER (CALIBER 8L35 — 200M DIVER'S WR) REFERENCE CALIBER YEAR CASE ALLOY, DIMENSIONS & DETAILS LAUNCH MSRP PRE-OWNED GREY / NOS SLA055 SBEX015 8L35 2022 1968 Modern Re-interpretation (1,300 pcs); Ever-Brilliant Steel, 42.6x13.1mm, 200m WR, ice-blue dial. $4,600 / €4,600 (1,415 KD / ¥506k) $2,400–$2,900 (740–895 KD) $3,000–$3,600 (Grey) $3,800–$4,400 SLA057 SBEX017 8L35 2022 1968 Modern Re-interpretation (600 pcs); Ever-Brilliant Steel, 42.6x13.1mm, 200m WR, charcoal dial. $4,600 / €4,600 (1,415 KD / ¥506k) $2,700–$3,200 (830–985 KD) $3,200–$3,800 (Grey) $3,900–$4,500 B) MM200 DAILY FIELD PLATFORM (CALIBERS 6R15 & 6R35 — 200M DIVER'S WR) REFERENCE CALIBER YEAR CASE SIZE, HANDSET & PLATFORM HIGHLIGHTS LAUNCH MSRP PRE-OWNED COLLECTOR / NOS SPB077 / 079 6R15 2018–20 Gen 1 44mm; black dial, black/blue bezel, broad arrow handset, steel bracelet or rubber strap, 200m. $850–$1,050 (260–325 KD Launch) $430–$620 (135–190 KD) Discontinued (Daily) $680–$950 (NOS) SPB083 / 105 6R15 2018–19 Special Editions: "Great Blue Hole" fumé blue dial set & "Dark Green Sunset" gold accent diver, 44mm. $1,050–$1,150 (325–355 KD Launch) $550–$750 (170–230 KD) $720–$920 (Grey) $880–$1,150 SPB109J1 6R15 2019 Thailand Zimbe 12 LE (1,200 pcs); green textured gradient dial, gold accents, 44mm case, 200m. ~44,000 THB (~$1,250) (385 KWD Launch) $950–$1,350 (295–415 KD) Regional Rare (Grail) $1,500–$1,900 SPB185 / 187 6R35 (70h) 2020–24 Gen 2 42.0mm compact case; steel insert (SPB185) or glossy black insert (SPB187), pencil hands, 200m. $1,200 / ¥140,000 (370 KWD Launch) $620–$800 (190–245 KD) $780–$910 (Grey) $900–$1,080 SPB207 / 255 6R35 (70h) 2021–22 Limited Editions: 140th Anniv Iriomote green (6,000 pcs) & The Black Series full PVD orange lume (5,500 pcs). $1,250–$1,350 (385–415 KD Launch) $680–$920 (210–285 KD) $850–$1,050 (Grey) $1,050–$1,300 SPB299 / SBDC167 6R35 (70h) 2022–24 Save the Ocean Glacier SE; light-blue vertically grooved ice dial, brushed steel bezel, 42.0mm, 200m. $1,250 / ¥148,500 (385 KWD Launch) $720–$880 (220–270 KD) $880–$1,020 (Grey) $1,050–$1,200 S E I KO 1 9 6 8 D IVE R MASTE R REF E RE N C E & VA LUATI O N G U I DE ( 1 9 6 8 – 2 0 2 6 ) | PAG E 5 C O M PI L E D & D O C U M E N TE D BY: M O HA M MA D A L- FO U DA R I SEIKO 1968 DIVER MASTER DIRECTORY Official Reference & Valuation Guide (1968–2026) O F F I C I A L LY S P O N S O R E D BY: JA PA N ES E WATC H CO L L ECTO R S ARCH IVAL AUDIT & METHODOLOGY NOTES Historical and current launch currencies (¥, $, €, THB) have been converted to Kuwaiti Dinar (KWD) and US Dollar ($) equivalents using applicable historical or reference-period exchange rates. Converted figures are approximate and should not be interpreted as original market MSRP. Secondary-market valuations represent indicative market ranges as of September 2026 and are not official Seiko valuations. Actual transaction prices may vary materially according to condition, originality, service history, box and papers, regional market, seller, transaction venue, and date of sale. For current-production references, “Unworn / Full Set” is used instead of “NOS / Mint Box” where appropriate. NOS is strictly reserved for genuine unused deadstock examples. Discontinued references for which no active dealer market exists are identified separately by collector-market status rather than being presented as conventional grey- market pricing. Recent releases (HBF001, HBF002, HBC001, HBC002) are categorized as Current Release (Pre-Owned N/A). Their grey-market figures should be treated as indicative dealer/parallel-market estimates rather than established secondary-market prices. For the 1968 archival baseline, the original movement is described as a 10-beat Hi-Beat caliber operating at 36,000 vph. OFFICIAL & ARCH IVAL REFERENCE SOURCES Primary / Official Sources: Seiko Watch Corporation: Official product pages, historical heritage pages, technical specifications, and Prospex documentation. Seiko Japan: Official Japanese-language product pages, press releases, launch announcements, and historical catalog material where publicly available. Official Regional Seiko Releases: Japan (JDM), United States, European Union, United Kingdom, Middle East, Southeast Asia, and other official Seiko regional publications. Official Seiko Limited-Edition Documentation: Published production quantities, reference numbers, launch specifications, and serialized limited-edition information where officially documented. Technical & Historical References: Official Seiko historical documentation concerning the 1968 Diver, 6159 lineage, Marinemaster Professional lineage, and subsequent 1968 Heritage models. Official Seiko technical documentation for calibers including 6159A, 8L35, 8L45, 8L55, 6R15, 6R35, and 6R54. Secondary-Market Valuation Sources & Methodology: WatchCharts & Chrono24: Indicative secondary-market valuation data, observable asking-price data, and historical market observations. Verified Completed/Sold Listings: Completed and sold listings from major secondary-market platforms and specialist Japanese auction records. Currency & Valuation Methodology: Historical exchange-rate data for JPY, USD, EUR, THB, and KWD. Limited-edition production quantities are treated as primary- source facts only when supported by official Seiko documentation. E N D O F O F F I C I A L D I R E C T O R Y — J A P A N E S E W A T C H E S C O L L E C T O R S C L U B • • • • • • • • • • • • • • • S E I KO 1 9 6 8 D IVE R MASTE R REF E RE N C E & VA LUATI O N G U I DE ( 1 9 6 8 – 2 0 2 6 ) | PAG E 6