Glossary

Categories

Bonded Coins
space
Brockages
space
Counterbrockages
space
Die Adjustment Strikes
space
Die Caps
space
Die Trials
space
Double Denomination
space
Double/Multiple Strikes
space
Dual Countries
space
Experimental Blanks
space
Experimental Strikes
space
Experimental Surface
space
Feeder Finger Strikes
space
Galvanos
space
Gold Die Trials
space
Gold Errors
space
Gold Off-Metals
space
Hub Trials
space
Intentional Errors
space
Martha Washington
Test Pieces
space
Mated Pairs
space
Mules
space
Multiple Errors
space
Off-Centers
space
Off-Metals
space
Overstrikes
space
Pattern Die Trials
space
Pattern Errors
space
Pattern Mules
space
Plasters
space
Platinum Errors
space
Proof Errors
space
Specimens
space
Spectacular Errors
space
Transitional Errors
space
Two-Headed Coins
space
Two-Tailed Coins
space
Uniface Die Trials
space
Unique Coins
slabblankslab

Proof Errors

Proof coins are struck by technicians who hand feed the blanks into special presses. They are produced, examined and packaged using extreme quality control. It is very unusual to find major proof errors. A few broadstrikes, off-centers, double strikes (in collar) and off-metals have been known to be found in sealed proof sets. Proof errors are aggressively sought after by many error collectors.

Pictured above is one of the most spectacular Proof Ike Dollar Mint Errors of all time. Not only is it a spectacular double struck, it is also struck on a clad half dollar planchet.
Coin Inventory  |  Archives  |  Calendar  |  Contact
Terms/Info  |  News  |  Glossary  |  About  |  Home
Mike Byers Fine Art eBay
World's Greatest Mint Errors Mint Error News
MIKE BYERS INC
P.O. Box 401496, Las Vegas, NV 89140
mike@mikebyers.com   |   714.914.6415
Copyright © 1998-2024 Mike Byers Inc. All rights reserved. Website by Sam Rhazi Web Design. Legal Notice