I'm trying to determine the value of a Mens Omega manual Geneve with gold original strap. Works perfect.

 

Welcome!

First, we need better pictures. Second, is the band solid gold or plated? While we can tell it's supposed to be an 18K gold case by the 'BA' at the start of the reference number 132.021, we can confirm this with better macros of the back of the lugs. The '132' seems correct. 1 = man's watch; 3 = manual winding with center seconds; 2 = non-water resistant calendar. The hallmarks on the inside of the bracelet will tell us more about the gold content of that too.

 

Thanks for answer. I didnt found any hallmark

 

Nice gold case Geneve, looks to be in fair condition too.

Don't try to open the case yourself, you may damage it with gouges and scratches.

The bracelet may be gold too, it looks very hand made and I can't imagine a jeweller going to all that trouble just to plate it.

Look for a small stamp mark on the clasp/buckle, if it is gold, melt it as quickly as possible, it's rather unattractive and doesn't suit the watch.