1987 Soviet Union Ussr Russia 5 Oz Pure 999% Proof Silver Nature Bear Case + Coa Posted on January 26, 2025 by admin This stunning 1987 Soviet Union USSR Russia 5 oz pure 999% proof silver coin features a beautiful nature bear design and comes with a certificate of authenticity. 999,9% SILVER PROOF COIN. WITH OFFICIAL MINT CASE + COA.