AboutMyCoin1958 Washington Quarter (No Mint Mark) in AU55
A 1958 Washington quarter with no mint mark graded AU55 is that coin in one particular state of preservation — the date and the mint mark are already fixed, and AU55 is what a grader called the surface that survived. What that looks like on this coin is below. The nearest grade of this date this site does have a researched figure for is About Uncirculated (AU-50), at $15 to $19, from sales and public data.
What AU55 means
A 1958 Washington quarter with no mint mark in About Uncirculated (AU-55) shows slight wear at the highest points of the design and nowhere else: the high points of Washington’s hair above and behind the ear are just touched, the eagle’s breast and the tops of its wings likewise, and most of the original mint lustre is intact. The trade writes it as Choice About Uncirculated, and it is the rung where the question stops being how worn the coin is and becomes how much lustre it kept.
A slab, a dealer’s list or a price guide may write this grade AU-55. They are the same grade and the same 1958 Washington quarter with no mint mark.
Where this grade sits
The grades a 1958 Washington quarter with no mint mark is given run from PO1 to MS70. One step up from AU55 is About Uncirculated (AU-58). 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.
How to check this yourself
Sold listings, not asking prices. The link below is already filtered to completed sales of a 1958 Washington quarter with no mint mark in AU55, which is the difference between what somebody paid and what somebody hoped for. Until this site has a researched figure for this grade, that search is the answer — take the middle of several recent sales rather than the highest.
Completed sales of a 1958 Washington Quarter (No Mint Mark) in AU55 →
The metal floor under it
$11.64
0.1808 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 1958 Washington quarter with no mint mark cannot be worth less than the metal in it. That figure is what the premium for AU55 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.
1958 Washington Quarter (No Mint Mark): every grade, the metal and the specification →