Here is a pair of strictly simple bar cufflinks,  each with a single oxidised groove and a silky matt surface.. They were made by the Danish modernist master, Niels Erik From (see bio)

Condition: Excellent,  no visible damage, very gently worn.

Marks: Sterling, Denmark, N.E.From, 925S

Size; 2.5 cm (1") long,  with a combined weight of 17 gms

Year: 1970s