G. Gerlach · Microbrand · Poland
G. Gerlach Sanatio Chronograph
- Seagull ST1901
- 39 mm × 12 mm
- Sapphire crystal
- 100 m water resistance
Where to buy
Movement
- Caliber
- Seagull ST1901
- Type
- Hand-wound
- Tier
- Mid
- Complications
- Small seconds, Chronograph
- Frequency
- 21,600 bph
- Power reserve
- —
- Hacking
- —
- Accuracy (factory)
- —
Case
- Diameter
- 39 mm
- Lug to lug
- 48 mm
- Thickness
- 12 mm
- Lug width
- 20 mm
- Material
- Steel (316L)
- Hardening
- —
- Water resistance
- 100 m
- Crown
- —
- Case back
- —
- Bezel
- —
Crystal & dial
- Crystal
- Sapphire
- Shape
- Double-domed
- Anti-reflective
- Yes (side not stated)
- Lume
- —
Bracelet
- Bracelet
- —
Straps
- Strap 1
- Leather, 20mm leather strap
Weight
- Head only
- —
- On bracelet
- —
- On strap
- —
Prices
About this entry
67% of key specs known. Missing: weight, hardening, crown, lume, bracelet offered.
The brand gives the movement as "SEAGULL ST19" (the family), a hand-wound chronograph; the dial's two subdials match the ST1901, recorded here. 39x48x12 mm 316L case, double-convex sapphire with AR coating, WR 100 (10 ATM), 20mm leather strap. Case dimensions as the brand gives them (39x48x12 mm, which it doesn't say includes the crystal); the same slim 39x48x12 case is used for the Sanatio, Tatry, Navigator Mk 3 GMT, General Sosabowski and PZL P50 Hawk Automatic and Chronograph. The brand's store is bilingual and lists the watch twice, as a Polish and an English product at the same price; both pages are listed as stores and prices cite the English one.
Last verified: 2026-10-31. Edit or correct this entry.
Sources
- G. Gerlach, SANATIO CHRONOGRAPH (English product page) accessed 2026-10-31
- G. Gerlach, SANATIO CHRONOGRAF (Polish product page) accessed 2026-10-31
- G. Gerlach store data (description, options and prices in PLN) accessed 2026-10-31