Référencement et cotations de pièces d'or et d'argent
Invention of the Stirrup
20 g - 1993 - BE
Chin-Yin Yang
20 g - 1993 - BE
First Compass
1 kg - 1992 - BE
Butterfly Kite
1 kg - 1992 - BE
First Seismograph
1 kg - 1992 - BE
Ancient Ships and Shipbuilding
1 kg - 1992 - BE
First Compass
5 onces - 1992 - BE
Bronze Casting
20 g - 1992 - BE
First Seismograph
20 g - 1992 - BE
Ancient Ships and Shipbuilding
20 g - 1992 - BE
Spanish Colonial 8 Reales Cob
15 g - 1992 - BE
Paper
15 g - 1992 - BE
Butterfly Kite
20 g - 1992 - BE
First Compass
20 g - 1992 - BE
Mathematical Definition of Zero
20 g - 1993 - BE
Unearthing of The Terracotta Army
20 g - 1993 - BE
Mathematical Definition of Zero
1/4 once - 1993 - BE
Stirrup
1/4 once - 1993 - BE
Umbrella
1/4 once - 1993 - BE
Terracotta Army
1/4 once - 1993 - BE
Tuned Bells Bells
1/4 once - 1994 - BE
Silk Fabric Fabric
1/4 once - 1994 - BE
Chain Pump Pump
1/4 once - 1994 - BE
Sailing Masts Masts
1/4 once - 1994 - BE
Gunpowder
1/2 once - 1995 - BE
Porcelain
1/2 once - 1995 - BE
Print
1/2 once - 1995 - BE
Acupuncture
1/2 once - 1995 - BE
Butterfly Kite Kite
1 once - 1992 - BE
Compass
1 once - 1992 - BE
Copper Casting
1 once - 1992 - BE
Bronze Casting
1 kg - 1992 - BE
Dragon boat
1/2 once - 1995 - BE
First Seismograph
1 once - 1992 - BE