I saw this 1937 Art Deco Sector Dial on eBay using a cal. 26.5 , it’s 30.4mm. The hands look like they have definitely been replaced and sadly the dial looks like it’s had better days. They want £900 for it. Too much?
Here’s one ending in 2 and a half hours. It’s labelled as a ‘military’ Watch. It’s going for $1200 or beset offer. It’s got the same numerals as the on I bought but is 4 times the price!