China 1992 First Seismograph Silver Coin - Inventions and Discoveries of China Series - NGC PRF-68 Ultra Cameo
MetalSpec:
Silver
WtSpec:
22 grams
Purity:
0.9
Mintage:
15,000
Denomination:
5 Yuan
Grade:
NGC PF-68 Ultra Cameo
DaySign:
0
OzSize:
0.7073
GmSize:
22
Year:
1992
MetalID:
2
