Made between 1960-1964 Croton Nivada Grenchen Antarctic D Automatic Gents Dress Watch.
 
The Antarctic Range of watches produced by Croton Nivada Grenchen were produced in recognition of the US Navy Deep Freeze Tour of 1957. And these watches have been incredibly collectable since their initial launch in 1954, however this particular iteration with its Gold 20 micron case and linen dial is particularly sought after. 
 
This particular watch is in very good cosmetic condition and is running well