South Manchuria Railway Lapel Badges/南満洲鉄道徽章

South Manchuria Railway employee badges.

 

Size 15.3 × 11.1 mm.

Another example.

 

 

 

Around the emblem stylized 消 - extinguish, neutralize (most likely for 消火 - fire fighting, extinguishing a fire).

 

 

Marked 純銀金張 - Gilded Pure Silver.