Re:
looks more Orthodox than Catholic, although Russian crosses often have a 3rd bar.
2 bar is sometimes called Patriachal Cross and more recently Cross of Lorraine. Since its not hundreds of years old I suspect its an interesting artifact made for tourists maybe 50 years ago, but could be wrong, its the sort of thing my grandmother would have brought back from travelling in the 1950s
worth ? whatever someone will pay, personally nothing meaningful, sorry
ps don't know much about antiques but inhereted a lot of old stuff that's not worth much