Glossary

Categories

Bonded Coins
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Broadstrikes
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Brockages
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Counterbrockages
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Die Adjustment Strikes
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Die Caps
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Die Trials
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Dies
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Double Denomination
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Double/Multiple Strikes
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Dual Countries
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Essay Trial Strikes
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Experimental Blanks
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Experimental Strikes
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Experimental Surface
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Feeder Finger Strikes
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Foreign Coins Struck
on U.S. Planchets

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Galvanos
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Gold Die Trials
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Gold Errors
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Gold Off-Metals
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Hub Trials
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Indents
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Intentional Errors
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Martha Washington
Test Pieces

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Mated Pairs
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Mules
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Multiple Errors
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Off-Centers
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Off-Metals
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Overstrikes
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Pattern Die Trials
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Pattern Errors
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Pattern Mules
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Plaster Models
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Platinum Errors
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Proof Errors
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SMS Mint Errors
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Specimens
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Spectacular Errors
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Struck Scrap
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Struck Thru
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Transitional Errors
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Two-Headed Coins
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Two-Tailed Coins
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Uniface Die Trials
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Unique Coins


slab
Charles A. Lindbergh 14-Inch Obverse Bronze Galvano
For The 1928 Congressional Gold Medal
Designed and Sculpted by Laura Gardin Fraser

Galvanos

In medallic work, a galvano is always one-sided and made by placing a bas-relief mold or pattern (of plaster, plastic or metal) in an electrolytic tank containing an electrolyte solution.

Galvanos can be made positive or negative (provided the pattern is the opposite: a positive pattern makes a negative galvano). In the numismatic and medallic field negative galvanos are the form of pattern making of a bas-relief to be converted into a die. Galvano casts are often mounted on wood and become a very desirable wall hanging.