Orders of Saint Stanislaus made by St.Petersburg workshop IM

This I·M-marked cross "For Service In The Caucasus" 1864 could be made by the same workshop https://asiamedals.info/threads/cro...-made-by-saint-petersburg-workshop-i-m.30361/.

2nd class cross with flat "black" /dark red/ enamel.

Gold, enamel.
Size 57.8×55.4 mm.
Weight 38.18 g.

Marked at the ring with "IM", gold hallmark "56" and St. Petersburg year mark "1857".

Central medallion of excellent jewelry craftsmanship.

Marks.

 

Same cross under a different light.