The four Gold Eagle denominations, in six short sections.

The American Gold Eagle has four denominations on the same 22-karat gold/copper alloy composition (91.67% Au, the balance copper for durability) — $5, $10, $25, and $50. They are the fractional and full-ounce issue set authorized by Congress in 1985 (Public Law 99-61), and the $50 is the 1 oz bullion-baseline coin collectors price against.

The face values are nominal — they are the legal-tender sticker, not the metal value of the coin at issuance. The 1 oz $50 carries roughly 1 oz of gold; the fractional $25, $10, and $5 carry ½ oz, ¼ oz, and 1/10 oz respectively. The same per-coin premium formula applies (see section 5 below), and a $5 fractional trades at the same per-oz premium a $50 trades at when the cert and strike match — the difference is the underlying gold weight, not the legal-tender face value.

Each denomination has a fixed weight (in troy ounces of gold) and outside diameter (in millimeters). The Mint publishes the figures in the American Eagle bullion / proof specifications, and the holder label prints the same face-value line that anchors the weight column below.

1. $5 · 1/10 oz · 16.5 mm. The smallest fractional — a 16.5 mm blank struck at the Philadelphia or West Point facility. The diameter is unchanged across the program.
2. $10 · 1/4 oz · 22 mm.The 1/4 oz blank is 22 mm (post-1990); pre-1990 the $10 was 17 mm under the Liberty Cap obverse design (the ‘tiny gold’ run that collectors pay up for as a burnished-label pedigree). The diameter change is one of the few design-axis shifts in the program.
3. $25 · ½ oz · 22 mm.The medium fractional — 22 mm at ½ oz, often called the ‘gap coin’ because it prices between the $10 quarter-oz and the $50 full-ounce.
4. $50 · 1.00 oz · 32.7 mm. The 1 oz bullion-baseline coin — 32.7 mm across the Augustus Saint-Gaudens Liberty face on the obverse. This is the coin the filtered tray binds to the most.

The diameter shift on the $10 is the only design-axis change collectors watch in the weight/dimension axis. The Liberty Cap obverse (pre-1990) is also a reverse-design designation, comparable to the Type-2 reverse distinction for the Silver Eagle — see Type-2 reverses for the parallel mechanics on the silver side.

Collector relevance runs along three axes — weight (fractional vs full ounce), strike (bullion, proof, burnished), and mint mark (the W on a burnished strike vs the blank holder on a bullion strike). The four denominations distribute unevenly across the tray: the $50 and the $25 carry most of the per-coin rows, the $10 carries a smaller selection, and the $5 is the rarest fractional on most curated trays.

Concretely: the $50 (1 oz) is the per-grade baseline that catches every ‘no pedigree’ bullion or proof Gold Eagle on the tray. The $25 (½ oz) is the gap coin — it prices between the $10 and $50 and is the easiest fractional to stock at modest per-coin cost. The $10 (¼ oz) is the most popular gift-tier denomination at the same per-oz premium as the $50. The $5 (1/10 oz) is the smallest fractional and tends to ride the same per-oz premium but with a smaller per-coin floor.

The same per-grade / per-metal premium formula applies regardless of denomination —price = spot + premium/oz — so a $5 and a $50 with matching cert and strike trade at the same per-oz premium when the cert row is on the tray. The denominator matters for the dollar bid, not for the per-coin premium.

In an online cert review, three things matter in order: (a) the cert match against the live population report (does the cert number resolve on the service’s cert page, and does the denomination · year · mint mark match what the holder prints — see How to read a holder for the field-by-field breakdown), (b) the eye appeal under magnification (open the holder under a 10× loupe and look for contact marks, milk spots, or rim issues — those are the three defects a flat scan misses), and (c) the label freshness (the holder era, the label generation, and any burnished / pedigree line relevant to the row a buyer is pricing against).

Same precedence as the other four guides on the shelf — cert match first, eye appeal under magnification second, label freshness third. If all three hold, the offer binds to the inventory row’s premium, the same binding we publish on FAQ · buyback terms.

The per-coin formula is the same one we publish on the home pricing card and the same one the buyback calculator runs: price = spot + premium/oz. The premium is per-metal and per-grade and shifts upward for the scarce / burnished / first-year strikes the same way it shifts on the silver side documented in MS70 vs PR70 and West-Point burnished labels.

Worked example, 1 oz Gold · MS70: a 2024 (or comparable current-year) bullion $50 MS70 trades above the standardized silver+gold premium floor because the gold-weight bid is ~70× the same-weight silver bid at today’s spot. The per-oz premium is what scales across the four denominations — a $5 fractional carries the same per-oz premium as the $50, with the dollar math driven by weight, not by the legal-tender face value.

If the cert you bring matches a piece on our tray, the offer binds to that row’s premium; otherwise the per-grade default is published on the offer screen so you can see exactly which premium applied before you accept. Same lead-time as the buyback flow: same-day against the morning spot.

The Mint has struck American Gold Eagles continuously since 1986 (proof coins started in 1988), and the four denominations have different per-year strike calendars. The $50 1 oz is struck every year in the highest mintage; the fractional $5, $10, and $25 see lower strikes that vary materially by year.

The 1/10 oz $5 was suspended by the Mint in a few years and produced in markedly reduced mintages in others — those low-mintage fractionals are the rows collectors pay up for, and they’re the ones the filtered tray tends to clear out first. The 1/4 oz $10 saw a similar pattern in the early years, and a small handful of years carry a $25 strike suspension that lifts the $25 premium above the $10 and $5 for collectors hunting an allotment.

The per-cert premium applies to those rare-year runs the same way the burnished-label premium documented in West-Point burnished labels applies to the scarce-mintage burnished runs: it shifts upward on a per-cert basis when the per-year mintage is short. If the cert you bring matches a low-mintage fractional on the tray, that row’s premium is what binds.