Here is a fabulous pair of Art Deco silver cufflinks by the world famous Danish silversmithy Carl M Cohr, established in 1860 (see bio).  The cufflinks feature a central ribbed panel with oxidised grooves on either side and plain external bands. 

Condition:  Excellent, no visible damage, professionally cleaned. 

Marks: CMC monogram, 830, 50

Size: 2cm (0.8") long

Year: 1940s?