Antique Niello solid silver letter opener in Caucasian Russian Empire

Antique Niello solid silver letter opener 
in Caucasian Russian Empire 
silver hallmark: no hallmarked so sold like white metal 
item tested - solid silver purity 830 
weight: 30.9g 
length 136.78 mm 
Antique Collectible gift idea
Condition - seen photos

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