Watch List notes:

RUSSIAN COINS AND MEDALS, R.S.F.S.R., 1921, 15 Kopecks 1921. Y.81. Authenticated and graded by NGC PF 66. Lustrous pale lavender-gray with hints of blue. Gem brilliant PROOF
Ex "Russian Collection," Renaissance, Philadelphia, August 13-14, 2000, lot 978 (part)

Estimate: $1500