Waterproof AND an automatic. the Aquamatic was quite something in the 1950s. the 360EL on some dials indicates a full 360 degree rotation of the movement rotor, unlike lesser bumper movements of the time, and a major marketing coup.
The early models had a caseback held by 4 screws but the company moved to screwback cases in line with its other more popular model, The Antarctic.
Whilst small by modern standards, the 34-35mm case sizes were completely appropriate for the explorers of the 1950s, where size was less relevant than accuracy and reliability. Compared to a Rolex Explorer, it stands up well as at fraction of the price of one the 1950s collectors grail watches.
There is an Aquamedico version that carries a difference reference (AM4) but is essentially exactly the same model.
There are a huge range of Aquamatic watches but currently most interest is in the early models from the 1950s and 1960s. The model itself has just been revived in 2020 by the Nivada company, along with a modern version of its classic Chronomaster range.
A charming gents Croton Nivada Grenchen Aquamatic wristwatch produced in the 1950’s. The solid steel case measures 33.5mm and is in excellent unpolished condition, distinguishing itself with long, sweeping lugs, a screw down back and recessed crown. The factory original satin silver dial has developed a light creme patina and is near mint, with applies silver markers and radium lume dots. Signed “CROTON, NIVADA GRENCHEN, AQUAMATIC, SWISS”. Silver dauphine hour and minute hands with center sweep seconds.
Original signed ETA 1256 automatic with 17 jewels in excellent condition, running well and keeping time.
Delivered on a modern leather strap with steel buckle.
- Stainless steel
- 33.5mm (excluding crown) / 18mm between lugs
- Original unsigned recessed crown
- Plexi crystal
- Case number: 61K42924
- ETA 1256
- Auto winding
- 17 jewels
- Serial number:
- Original satin silver
- Polished silver applied hour markers
- Original silver dauphine hands
- Signed: “CROTON, NIVADA GRENCHEN, AQUAMATIC, SWISS”