Home > Listing of Enamels > Vintage EnamelClick Image To View Larger 160 Lawn (tr) $4.50 Weight 1 oz ($4.50) 8 ozs ($36.00) 16 ozs ($72.00) 1785:=:4.5,1787:=:36,1788:=:72 Quantity: - + Transparent, cataloged, Thompson Enamel for Copper, Silver, Gold, Iron and Steel. This enamel is "medium fusing" and should be fired at 1450 to 1550 degrees F. for approximately 2 to 4 minutes. All Enamel is pre-1990, 80 mesh and lead bearing.