San Martin · Factory brand · China

San Martin SN037 44mm

Ref. SN037 · Pilot

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

San Martin SN037 44mm bronze pilot with black Type A dial and small seconds on brown leather
Photo: San Martin
  • San Martin SN037 with blue sunburst Type A dial on brown leather
  • San Martin SN037 with mother-of-pearl dial on brown leather
  • San Martin SN037 sapphire display caseback showing the hand-wound Seagull ST3621
From $198 to $208
  • Seagull ST3621
  • 44 mm × 10.6 mm
  • Sapphire crystal
  • 100 m water resistance

Movement

Type
Hand-wound
Tier
Mid
Complications
Small seconds
Frequency
21,600 bph
Power reserve
—
Hacking
No
Accuracy (factory)
—

Case

Diameter
44 mm
Lug to lug
53 mm
Thickness
10.6 mm
Lug width
22 mm
Material
Bronze
Hardening
—
Water resistance
100 m
Crown
Push/pull
Case back
Display
Bezel
Fixed

Crystal & dial

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

Bracelet

Bracelet
Not offered

Straps

Strap 1
Leather, Brown cowhide leather, 22mm, bronze pin buckle

Weight

Head only
—
On bracelet
—
On strap
—

Prices

VariantConfigurationTypePriceUSDAs ofSource
Black dial—Street198 USD$1982026-10-24link
Blue sunburst dial—Street198 USD$1982026-10-24link
Mother-of-pearl dial—Street208 USD$2082026-10-24link

Variants

NameReferenceDial
Black dialSN037black
Blue sunburst dialSN037blue
Mother-of-pearl dialSN037mother-of-pearl

About this entry

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

Brand specs: Seagull ST3621 hand-wound movement, bronze (alloy not stated), 44mm excluding crown, 53mm including lugs, 10.6mm including crystal, 22mm lugs, sapphire with AR coating (side not stated), blue sunburst, black or mother-of-pearl dial, heat-blued hands filled with lume, C3 lume glowing green (where it is applied beyond the hands is not stated), push-pull diamond-shaped crown (recorded as not screw-down), sapphire display caseback, 22mm cowhide strap with bronze pin buckle, 100m; weight not stated. The listing title calls it a "dive watch pilot", but the case, crown and dial are a flieger's. Photos show a Type A dial (Arabic hour numerals, triangle at 12, minute track) with small seconds at 6, no date, and a smooth fixed bezel. Mother-of-pearl costs $208, the others $198. Inspired_by is read from the design; the brand does not name it. Every variation showed "Out of stock" on 2026-10-25, so production status is unknown.

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

Sources