No Date

Oldest

Seiko (SII/TMI) Caliber NH38A

Manufacturer Seiko (SII, TMI) Caliber Number NH38, NH38A Movement Type Automatic, self-winding mechanical Diameter 27.40mm Casing Diameter 29.36mm Height 5.32mm...

Automatic

6347

Oris Caliber 732

Brand Oris Caliber Number 732 Base Caliber Sellita SW200-1 Movement: Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Height 4.6mm thick...

Automatic

Sellita Caliber SW200-1

Manufacturer Sellita Watch Co SA Caliber Number SW200-1, SW-200-1 Base Caliber SW200 Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm...

Automatic

184183

Miyota Caliber 9039

Manufacturer Miyota (Citizen) Caliber Number 9039 Base Framework 9015 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Thickness 3.90mm...

Automatic

18351

ETA Caliber 2525

Manufacturer ETA Caliber Number 2525 Family ETA 2500 series Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Thickness 4.7mm...

Automatic

Tudor Caliber T601

Manufacturer Tudor Caliber Number T601 Base Caliber ETA 2824-2 or Sellita SW200-1 Movement Type Automatic, self-winding mechanical In-House? No COSC?...

Automatic

744

Phantom Date

What is a Phantom Date on a watch movement? A Phantom Date is when a watch doesn’t have a cut-out...

Guides

1810

Tudor Caliber T600

Manufacturer Tudor Caliber Number T600 Base Caliber ETA 2824-2 or Sellita SW200-1 Movement Type Automatic, self-winding mechanical In-House? No COSC?...

Automatic

1233

Longines Caliber L888 ND

Brand Longines Caliber Number L888 (no date version) In-House? No Base Caliber ETA A31.L11 Movement Type Automatic COSC? No Lignes...

Automatic

Miyota Caliber 8N24

Brand Miyota (Citizen) Caliber Number 8N24 Movement Type Automatic Lignes 11.5”’ Diameter 26mm Height 5.55mm Minimum Case Diameter 30.3mm Minimum...

Automatic

1526

Seiko Caliber 6R31

Manufacturer Seiko Caliber Number 6R31, 6R31A Movement Type Automatic Diameter 27.40mm (needs confirmed) Casing Diameter 27mm (needs confirmed) Height 5.25mm...

Automatic

218

Seiko Instruments (SII) Caliber VH31

Manufacturer Seiko Instruments Inc. / SII / Hattori / TMI Caliber Number VH31, VH31A, VH31B Type Quartz (mechaquartz), battery-powered Lignes...

Quartz

3862

Rolex Caliber 3230

Brand Rolex Caliber Number 3230 Based On Rolex 3130 Movement Type Automatic, self-winding mechanical In-House? Yes Chronometer? Yes (COSC +...

Automatic

347

Tudor Caliber MT5400

Manufacturer Tudor Caliber Number MT5400, MT-5400 In-House? Yes Diameter 31.8mm Thickness 6.5mm Vibrations Per Hour 28,800 bph (4Hz) Lift Angle...

Automatic

1328

Tudor Caliber MT5402

Brand Tudor Caliber Number MT5402, MT-5402 In-House? No Manufacturer Kenissi Chronometer Rated? Yes COSC Certified? Yes Diameter 26mm Thickness 6.5mm...

Automatic

1524

Seagull Caliber TY2807

Manufacturer Seagull, Sea-Gull Caliber Number TY2807 (1601K, DG2807) Movement Type Automatic, self-winding mechanical Diameter 28mm Height 5.18mm Jewels 20 or...

Automatic

1020

Miyota Caliber 8N26

Manufacturer Miyota (Citizen) Caliber Number 8N26 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 5.55mm Minimum Case Diameter...

Automatic

314

Hamilton caliber H-12

Brand Hamilton Caliber Number H-12 Based On ETA caliber 2825-2 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Jewels...

Automatic

Blancpain Caliber 13P8

Manufacturer Blancpain Caliber Number 13P8 Base Caliber Blancpain 1315 Type Automatic, self-winding mechanical In-House? Yes Lignes 13”’ Diameter 30.6mm Height...

Automatic

215

La Joux-Perret Caliber LJP-G101

Manufacturer Manufacture la Joux-Perret S.A. (MLJP) Caliber Number LJP-G101 Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Casing Diameter 26mm...

Automatic

614

Rolex Caliber 7140

Manufacturer Rolex Caliber Number 7140 Movement Type Automatic, self-winding mechanical In-House? Yes Chronometer? Yes (COSC + Superlative Rolex certification) Jewels...

Automatic

216

Rolex Caliber 4132

Manufacturer Rolex Caliber Number 4132 Movement Type Automatic, self-winding mechanical, chronograph In-House? Yes Chronometer? Yes (COSC + Superlative Rolex certification)...

Automatic

1025