OK, it would be good if you started a new thread with pictures of your watch. The B tyically indicates that the top of the watch is not 18k gold. Usually chrome plate.

Looks like a reprint.

The factory quote of $2500 is ridiculous. It's more than the watch is worth. I can get this watch serviced for you for under $700.

There is no model name but it might have a US case reference number. The movement is caliber 810 and it was made between 1952 and 1954.

It dates to 1966-67. If you mean the crowns, on this model I would expect them to be signed.

45 degrees.

I agree with that valuation. They're sort of small, so don't fetch big numbers.

If it's not worn through anywhere, and that's a big if, $3500 or so is reasonable. If any wear at all, deduct from there.

45 degrees

Original crown is plain, slightly larger than what you have but it has no step. Yours has a small step. The knurls are finer, i.e. more of them that what is on it right now.

The dial is definitely repainted. I'm not sure iof that hands are original. The crown has been replaced.

The movement probably dates to 1933 at the earliest. The serial look up is +/- 2 years so it's within the margin for error.