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Mike Byers Mint Error News – Unique Proof Gilt Reverse Pattern 1831 Half Sovereign

Mike Byers Mint Error News - Unique Proof Gilt Reverse Pattern 1831 Half Sovereign

Gilt Uniface Reverse Die Trial

NGC Proof 65 Ultra Cameo



By Mike Byers for Mint Error News ……
This is a unique and unrecorded Proof gilt reverse pattern for the 1831 Great Britain William IV Half Sovereign. The regular issue was struck in Proof-only and is rare.

This reverse pattern is not listed in any numismatic reference book, including Wilson and Rasmussen. It is also missing from every major Great Britain collection of gold and Half Sovereigns.

This unique die trial pattern was struck to test the new diameter, design, and new experimental equipment at the Royal Mint. The regular Proof-only issue was struck with both plain and milled edges. These were struck for the coronation of King William IV, who reigned from 1830 to 1837, and were included in the gold Proof sets that are extremely rare.

It is amazing that this Half Sovereign pattern was preserved for almost 200 years and is in gem condition. This unique and unrecorded pattern belongs in a collection of English Gold Coins and Patterns.

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World’s Greatest Mint Errors

The book World’s Greatest Mint Errors is an enjoyable numismatic resource packed full of some of the rarest, most dramatic, and extraordinary errors and die trials ever assembled in one publication. It combines stunning imagery with the most accurate information available to provide anyone interested in mint errors with the latest data on mint error coins from the United States and around the world. Hundreds of spectacular errors are pictured. Each error coin photo is presented in full color and enlarged to enhance the smallest details.

Some of the error coins featured in this book have never been seen by the public before, and each is described in great detail as to the type of error, the assigned grade, rarity, and estimated value. The release of World’s Greatest Mint Errors has only helped to further interest in the field in non-collectors and advanced collectors alike. This book is a must-have for every numismatic library.


Mike Byers
Mike Byers
Mike Byers is the Owner, Publisher and Editor of Mint Error News Magazine and the Mint Error News website that was founded in 2003. In 2009, Mike Byers published his first book, World's Greatest Mint Errors, which received the NLG Award for Best World Coin Book.

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