GOLD COIN FIELD GUIDE
Liberty Head $20
The Liberty $20 contains just under one fine troy ounce—not a full ounce. Date, mint, and the three major design types can make a large collector-value difference.
The metal baseline
- Profile covers
- 1850–1907
- Composition
- 90% gold
- Standard gross weight
- 33.436 g
- Fine gold per coin
- 0.9675 troy oz
- Face value
- $20.00
Twenty dollars is slightly less than one fine ounce
A historical Liberty Head double eagle contains just under one fine troy ounce of gold. Do not substitute a one-ounce bullion calculation for its published fine-gold weight.
Type, date, and mintmark help define the correct sales group. A generic common-date double-eagle result is not an appraisal of a scarce mint issue or a different design type.
Where to look. Confirm TWENTY D. or TWENTY DOLLARS and inspect the mintmark. This profile covers the 1850–1907 circulation series, not the 1849 pattern.
Dates and details worth a second look
This is a selected watch list, not every key date or variety in the series. Finding a matching date is a reason to inspect further—not proof of authenticity, grade, or a particular value.
What do these collector labels mean?
Key date. An important scarce issue in this series; grade and authenticity still matter.
- Key date
1856-O
A major New Orleans rarity; an apparent match calls for expert authentication.
Check the attribution reference ↗ - Key date
1870-CC
A major Carson City rarity, far removed from common-date bullion comparisons.
Check the attribution reference ↗
Two questions, not one price
What is the contained metal worth? This profile uses 0.9675 fine troy ounces of gold per coin. Multiply that by the number of matching coins and a current per-troy-ounce gold quote. The calculator shows the quote and its freshness when available.
What might a collector pay for this coin? That takes the exact issue, condition, surfaces, finish, and any authenticated variety. The checkpoints above explain why a collector sale may differ from the metal estimate. A calculated melt value is neither a guaranteed buying offer nor a complete appraisal.
The listed weights are standard reference specifications, with rounded published fine-metal values. They do not measure wear, damage, missing metal, or authenticity in your individual coin. Gross grams include the alloy; fine troy ounces describe the precious metal itself.
Use this profile in the calculator →Build a useful comparison
- Record the full date, mintmark, denomination, and finish. Photograph both sides and any diagnostic detail.
- Use the specific references above to check a suspected variety. Do not clean the coin to make a feature easier to see.
- Compare completed sales for the same issue and similar condition. Separate proof, special-strike, and attributed examples from ordinary coins.
- Record shipping and other costs separately. An asking price or one exceptional auction result is not a typical sold price.
References and further checking
Use these references to inspect the issue and attribution in more detail. Prices, populations, and market premiums can change.
Educational reference only; not individualized appraisal or investment advice. For a potentially valuable or questionable example, use a qualified numismatist or established authentication service.