Orders of Saint Stanislaus made by Moscow workshop ПК /PК/

For today no exact attribution of Moscow-based workshop that used maker's mark ПК is known.
Orders of Saint Anna made by ПК /PК/ https://asiamedals.info/threads/orders-of-saint-anna-made-by-moscow-workshop-pk-pk.26284/
Orders of Saint Vladimir made by ПК /PК/ https://asiamedals.info/threads/orders-of-saint-vladimir-made-by-moscow-workshop-pk-pk.26289/

Breast star.

Silver, gold, enamel.
Size 83 x 83 mm.
Weight 55.72 g.

Reverse of the breast star marked with "ПК/PK"; screw plate marked with Moscow assay officer silver hallmark "84" with the coat of arms of Moscow.

Under different light.

 

1st class cross with "black" (dark red) enamel.

Gold, enamel.
Size 60 x 57.3 mm.
Weight 21.07 g.

Marked with "ПК/PK", partly readable Moscow assay office year mark "1869" and gold hallmark "56".

 

3rd class cross with swords in "black" (dark red) enamel.

Gold, enamel.
Size 45 x 45 mm.
Weight 12 g.

Marked with "ПК/PK" and partly visible assay office year mark "1866" .

Marks.

 

3rd class cross with "black" (dark red) enamel.

Gold, enamel.
Size 47 x 44.5 mm.

Marked with "ПК/PK" and gold hallmark "56" .