San Martin · Factory brand · China

San Martin SN0143 40mm

Ref. SN0143-G · In production · Pilot

Design reference: WWII B-Uhr observation watches (Type A and Type B dials)

San Martin SN0143-G 40mm pilot with black Type A hour-numeral dial and fluted bezel on black nylon strap
Photo: San Martin
  • San Martin SN0143-G with black minute-numeral dial on black nylon strap
  • San Martin SN0143-G bead-blasted case side with screw-down crown
  • San Martin SN0143-G screw-down solid caseback
  • San Martin SN0143-G nylon strap with steel buckle
From $168
  • Epson YN55A
  • 40 mm × 12.2 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

Type
Automatic
Tier
Entry
Complications
Hours, Minutes, Seconds
Frequency
21,600 bph
Power reserve
40 h
Hacking
Yes
Accuracy (factory)
—

Case

Diameter
40 mm
Lug to lug
47 mm
Thickness
12.2 mm
Lug width
20 mm
Material
Steel (316L)
Hardening
—
Water resistance
100 m
Crown
Screw-down
Case back
Solid, screw-down
Bezel
Fixed
Finishing
Bead-blasted

Crystal & dial

Crystal
Sapphire
Shape
—
Anti-reflective
Yes (side not stated)
Lume
C3 (green) on hands and markers

Bracelet

Bracelet
Not offered

Straps

Strap 1
Nylon, 20mm, 316L steel buckle; threaded under the case in the photos

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
All—Street168 USD$1682026-10-24link

Variants

NameReferenceDial
Dial A black hour-numeral dialSN0143-Gblack
Dial B black minute-numeral dialSN0143-Gblack

About this entry

87% of key specs known. Missing: weight, hardening.

Brand specs: YN55 (recorded as the Epson YN55A, as on the other San Martin YN55 models), bead-blasted 316L, 40mm, 47mm lug-to-lug, 12.2mm including crystal, 20mm lugs, sapphire with AR coating (side not stated), black dial with printed hexagon logo, luminous sword hands, C3 green lume on hands and markers, 7.5mm screw-down crown, screw-down caseback, 20mm nylon strap with 316L buckle, 100m. Weight is not stated. The store titles it a "Diving Watch" in "Pilot Style"; the design is a pilot's watch: Dial A has Type A hour numerals, Dial B Type B minute numerals without the inner hour ring, both with the triangle at 12. The fixed fluted steel bezel and the solid caseback are from photos. The YN55 has a date but neither dial shows a date window, so complications are time only. Inspired_by is read from the design; the brand does not name it. Sold on the strap only, both dials at $168; each was in stock on 2026-10-25.

Last verified: 2026-10-25. Edit or correct this entry.

Sources