Hello, I recently received this (not so little) gem : Unfortunately the plexi had to be replaced (if you know something with the right profile, I'm interested). Underneath the dial looks new. The crown is unsigned, old, with a sheet of inox crimped around a brass core, but I'm wondering if it is original... I have a "bowler hat" omega signed crown that is a good fit. Some google image search does show quite a few 2421s... all with different crowns . Can somebody confirm the shape of the original crown, and the fact that it is signed (or not)? I'm also pleased with myself because I already had a late 40s omega buckle to go with it (can't wear a watch without an unsigned buckle if I know a signed one exists for it).