Well,, hard to say date or value !! Its a personal thing !! What one person likes the next may not !! It looks to be plated,, not sterling so 50`s to 60`s is a good guess !! It has some damage from the plate peeling but the turquoise looks to be a better quality than some others I have seen !! Prices are running between $25. and over a grand so its a toss up !! All I can say is,,,good luck !! If you list it post a link so we can watch !!