Antique cufflinks / early days / art nouveau / foam gold / rolled gold / portrait / photo hot of a lady

Beautiful jewelry for the man.
Antique cufflinks with a portrait of a lady from the Wilhelminian era.

Undamaged, hallmarked "SD" on the reverse and crossed sabers.

I guess that the material is foamed or rolled gold (alloy of copper and zinc, gold plated)

Diameter per button: hot 2.0 cm.

Jewelry case from more recent times, is included