Circa 1910-1920, these elegant oval cuff links are marked with the maker's mark "Hayward".  The design of engraved lines surrounds an interior plain oval.  These cuff links have a rigid bar popular in Edwardian through the Art Deco period and are marked "1/20 12k GF" (12 karat gold filled) as they are coated with a layer of gold on the face of the top link as well as the bottom link.  The bottom link is smaller with a plain linear engraved design.  Measures 3/4 long by 1/2" wide.

View of back face: