AboutMyCoin1928 Mercury Dime (No Mint Mark) in AU50
A 1928 Mercury dime with no mint mark graded AU50 is worth $26 to $40, from sales and public data. The grade below it is Extremely Fine (XF-45), and the same coin in that grade is worth less — how much less varies from date to date.
About Uncirculated (AU-50)
$26 to $40
From sales and public data. Figure occasionally updated. Not an appraisal or declaration of worth or value.
What AU50 means
A 1928 Mercury dime with no mint mark in About Uncirculated (AU-50) circulated briefly and barely: the high points of the wing and the hair above Liberty’s ear are flattened where they stand highest, the horizontal bands across the middle of the fasces and the tops of its rods show the same, some of the original mint lustre survives in the fields around them, and every other detail is as it was struck.
A slab, a dealer’s list or a price guide may write this grade AU-50. They are the same grade and the same 1928 Mercury dime with no mint mark.
Where this grade sits
The grades a 1928 Mercury dime with no mint mark is given run from PO1 to MS70. One step up from AU50 is About Uncirculated (AU-53). In general terms, the higher the grade the more the coin is worth.
A blank in the value column is a grade this site has not researched, not a grade the coin is worth nothing in.
← Extremely Fine (XF-45)About Uncirculated (AU-53) →
What it sold for
No certified sale of a 1928 Mercury dime with no mint mark in AU50 is recorded in the sources this site reads, which is what you would expect at this price: certifying a coin costs a large share of what this one is worth, so almost all of them change hands raw and unrecorded. The range above is what the published guides say rather than what anybody paid, and it is the weakest figure on this page.
How to check this yourself
Sold listings, not asking prices. The link below is already filtered to completed sales of a 1928 Mercury dime with no mint mark in AU50, which is the difference between what somebody paid and what somebody hoped for. If what you find sits outside $26 to $40, trust what you found: it is newer than this page.
Completed sales of a 1928 Mercury Dime (No Mint Mark) in AU50 →
The metal floor under it
$4.65
0.0723 troy oz silver × $64.38 per troy ounce
$64.38/ozt, based on spot prices at 23 September 2026 19:59 UTC
Whatever the market does, a 1928 Mercury dime with no mint mark cannot be worth less than the metal in it. That figure is what the premium for AU50 is measured against, and it moves with the metal price rather than with the coin market.
Where these figures come from
We gather publicly available data from several public sources including eBay, PCGS, NGC, Numista, USA Coin Book, PriceCharting, and others.
Not an appraisal. AboutMyCoin estimates from published specifications and does not authenticate or grade coins.
1928 Mercury Dime (No Mint Mark): every grade, the metal and the specification →