Not a secret I love Damascene - I love the craftsmanship and beauty of each piece, This is a unique piece - no markings whatsoever. 2 different styles on the birds with alternating plate. The safety catch is permanent and the closure is firm and secure. It is over 9" when open so should fit most. It's in immaculate unworn condition. I considered tearing it apart and making 3 pairs of earrings but it's too nice for that.  Only one I have but do have more vintage Damascene in the store if your a fan.