I bought this Omega wristwatch in a street market in Quito, Ecuador for $20 US 3 years ago, having worn it as my regular since. Over the years I've never been able to find nything out about the watch and would like to know what type this is and whether it is worth anything?
The back case is stainless steel and a different colour to the front enclosure, the back case is numbered 550687 externally.
Internally the working number is 7549567 and has the word Omega in old fashioned cursive writing. Also, on the front the word Omega is present but without the logo. I thought that this was a fake or dummy of some sort (given the price) am I right?