Vintage Black Onyx Silvertone Cufflinks signed Swank in Original Box

Vintage Black Onyx silvertone cufflinks signed Swank. These are handsome vintage cuff links in original box. 1/4th inch round Black Onyx Gemstone set on a round 3/4th inch silver tone metal. The post is 1/2 inch x 5/8th inch swivel toggle clasp. Hallmark: Swank. Year: 1960 - 1970's. Very good vintage condition. The box has some damage on top. Z.oo