Bullion value versus numismatic premium
Why some coins are worth their metal and others are worth far more, and how to tell which is which before you sell.
Every coin has two possible values. One is the metal it contains. The other is what a collector will pay for that particular coin. Sometimes those are close together. Sometimes they are not remotely close, and the difference determines whether selling by weight is sensible or catastrophic.
Bullion value
Bullion value is arithmetic: weight, purity, and the market. A one-ounce silver round and a badly worn silver dollar containing a similar amount of silver are worth broadly similar amounts as metal.
Most of what comes across our counter falls here, and there is nothing wrong with that. Scrap gold, worn sterling and common-date circulated silver are metal, and they are bought as metal.
Numismatic premium
Numismatic value comes from scarcity, condition and demand. It attaches to a specific coin — this date, this mint, this variety, in this grade — and it can be many multiples of the metal content.
Crucially, it is often invisible to the untrained eye. Two coins of the same denomination and similar appearance may differ by a mint mark a few millimetres across, or by a die variety that requires magnification.
How to tell before you sell
You largely cannot, and that is the point. The practical advice is simple:
- Do not pre-sort your collection into “valuable” and “junk” before bringing it in
- Do not clean anything
- Bring the whole box, including what looks like nothing
Any dealer worth using will separate the two categories in front of you and explain which is which. If someone offers to weigh your entire collection without looking through it first, go elsewhere.