Matti J Hyvarinen for Siro Koru, Finland 1975. Vintage Sterling Silver Ring.

Wonderful vintage modernist sterling silver designer ring. Fully hallmarked for sought after Matti J Hyvarinen for Siro Koru, Finland year 1975.

Excellent condition.

Ring size: Adjustable in photos US size 6 3/4. 

Width (max): 12.5mm

Weight: 8.6gram

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