This pair has some black cold paint accents that are wearing off but the links are in excellent shape. Cold paint refers to paint that is applied on TOP of a piece, whether it be pottery or metal. It can be taken off if so desired. They are probably from the 1950’s - 1960’s since that is how they use to embellish items. Overall size of links is 7/8” x 7/8” with no maker’s mark.