1908 Half Dollar Error List with Pictures
Liberty’s neck looks slightly swollen on some 1908-O halves, earning them the nickname “mumps.” One exceptionally fine NGC MS68 example sold for $19,550 at Heritage in January 2005.
Other 1908 half dollar errors hide below the date, where pieces of misplaced numbers can appear among the border teeth. Ordinary estimates start near $50, with the cited MS68 sale extending the overall span to $19,550.
Compare the border and neck features below before choosing a price range.
1908 Barber Half Dollar Misplaced Date Error (Estimated Up to $500)
The toothlike shapes below the date should form a regular border. On a misplaced-date variety, pieces of extra numbers appear among those teeth, which collectors call dentils.
A worker first punched the date too low into the die, the steel tool that stamps coins. The date was corrected, but traces of the first attempt remained.
A Barber Coin Collectors’ Society survey lists Philadelphia, Denver, and New Orleans entries. Its 2016 responses included two New Orleans examples.
That is a survey count, not every surviving coin. Each mint’s variety needs a matching photo of its own extra numbers.
Estimated Value
Circulated examples have an estimated $50–$500 range, based on the year guide’s figures. A recognizable piece of a number matters more than a misshapen border tooth.
A regular 1908-O half graded PCGS VF25 sold for $119 at Heritage in April 2025. VF25 describes a worn coin with useful design detail remaining.
That sale offers a same-year comparison for condition. It was not described as a misplaced date, so it does not establish the variety’s extra value.
How to Identify
Keep the whole date and the border beneath it in view. A 10× magnifier can reveal whether a suspicious raised curve belongs to a number.
An extra line right beside a normal digit may be a repunched date instead. A misplaced date leaves traces outside the intended date position.
Check the mintmark on the back: no letter for Philadelphia, D for Denver, or O for New Orleans. Match that mint before comparing the extra fragments.
A normal unworn half weighs 12.50 grams and measures about 30.6 millimeters, with grooves around its edge. Use a scale and calipers when safely accessible; the strongest clue is a number-shaped trace in the same border position as the matching variety photo.
1908-O Barber Half Dollar Mumps Die-Bulge Error (Up to $19,550)
The back of Liberty’s neck looks fuller on the 1908-O coins called mumps. This extra shape is part of the struck portrait, not a substance stuck onto it.
The die changed as it wore during use. That change left a small swelling on coins struck afterward.
It can be faint. Stack’s Bowers described only a slight trace on an NGC MS65 CAC example sold in its December 2020 Larry H. Miller auction.
Heritage also described the feature at the back of the neck. A normal portrait beside the coin helps reveal what is different.
Estimated Value
Heritage sold an NGC MS65 with faint neck swelling for $1,762.50 in June 2015. An estimated $1,500–$2,000 suits similar uncirculated quality.
Worn mumps examples have a separate estimated $50–$450 range. The coin’s overall condition matters more than the nickname.
The exceptional MS68 reached $19,550 in January 2005. Its much finer preservation explains the jump; a swelling on a worn coin does not place it in that price bracket.
How to Identify
Place a normal 1908-O portrait beside the suspected mumps example. Use matching light and magnification so a shadow does not create a false difference.
Concentrate on the back of the neck. Tilt the coins slowly and see whether the extra fullness stays part of the portrait as highlights move.
A 10× magnifier can help spot a seam around added material or a dent beside metal pushed up by damage. Find the O below the eagle on the back to confirm New Orleans.
For a safely accessible coin, use a digital scale and calipers against 12.50 grams and roughly 30.6 millimeters, with grooves around its edge. The useful final comparison is the neck’s shape beside a photographed mumps example.
Conclusion
The extra number fragments and the swollen neck come from different mistakes in the dies. One concerns where the date was punched; the other reflects a change during use.
Estimated prices begin around $50, rise to $1,500–$2,000 for MS65 mumps coins, and reach the cited $19,550 MS68 sale. Match the mint, visible feature, and condition before treating any example as a price guide.