A 1950's or 1960's ladies manual wind. The reference number will be on the inside. The integrated bracelet has a small Omega hallmark, so it could well be as it came from Omega. Looks to be in all 18kt. Does it have a logo on the clasp? The value of these isn't high, no matter what the asking prices that you see all over the internet. Melt value is about it as there is no market for them.