Art Deco 10K yellow gold Mermaid Cufflinks 4.5g JR477

Circa 1930-1940, this pair of cufflinks showcase a sea Mermaid fish in reproduces etching. Oval shape with an open back design. The cufflink back is oval-shaped, like a bean, and hollow. The cufflinks are 18.0 x 12.5mm, 15/16" long, no hallmark, tested 10K for entire cufflinks,