Glad you took the rubbing well and I hope you stick around.
I’m a bit gun shy after so many people doing apparently no research and demanding answers with out so much as a please or thank you.
if you had posted what you had found and what did not make sense the reaction would have been universal help and a lot more assistance then you got.
for the record I have the same odd clasp with 14k filled on it but mine has a beads of rice style bracelet... it comes up under a google search... it’s an unknown clasp. The other seems to show it was for a larger dynamic series watch and is obviously not the bracelet on it.