Guys,

After another genuine Omega vintage buckle please. 14mm stainless, to go on this:

As it's a 40s watch, something appropriate for that era please. Failing that, nothing overtly modern.

Ta,

Jason

 

Branded buckles showed up about the same time as branded crowns, probably early 1950s. I think your watch would be too early for that. The good news is that any vintage stainless buckle will work. Look for something with a thin profile. Study a few ads from that period. Here's a 1947 buckle:

 

Thanks @Amadeus