IWC platinum case automatic (1961) Current Collection A later calibre derived from

A later calibre derived from the 488 was used to power the JLC Geomatic

this features automatic winding

which is well sealed against the elements

The case of the watch is hallmarked for 1960

IWC platinum case automatic (1961) Current Collection A later calibre derived fromThis is a 1960s International Watch Company automatic with a Japanese made platinum case. In the 1960s Isomura, who were the Japanese distributor for IWC watches, produced a small number of platinum cases for the Japanese domestic market. These cases were made in Japan in order to avoid the prohibitively high tariffs on importing platinum cases from Switzerland. Platinum watch cases are extremely uncommon, especially for a man's watch. I understand