Does anyone know the silver content of this coin. Not in catalog.

 In the 

Series: History of America 

 there are only these three on the site 

https://www.ngccoin.com/price-guide/world/liberia-20-dollars-km-1673-2004-cuid-1944935-duid-1945755 

https://www.ngccoin.com/price-guide/world/liberia-20-dollars-km-1674-2004-cuid-1944936-duid-1945756 

https://www.ngccoin.com/price-guide/world/liberia-20-dollars-km-1675-2004-cuid-1944937-duid-1945757 

 but all those have

Fineness: 0.9990 

 if that helps. 

Composition: Silver

Fineness: 0.9990

Weight: 20.0000g

ASW: 0.6424oz

Melt Value: $44.87 (3/27/2026)

Diameter: 40mm