How junk silver melt value is calculated

Junk silver is its own corner of the catalog with its own melt formula.

The standard weight × spot math doesn't fit pre-1965 US fractional silver because that coinage was minted, traded, and bagged by face value rather than by weight, and the silver content per dollar of face value is a known constant — not something you'd want to compute coin by coin.

This article covers the formula Gold Silver Ledger uses, the six junk silver entries the app ships with, and why the multipliers are what they are.

If you haven't read Understanding melt value yet, start there — it covers the standard formula for everything else. This article is the variant.

For any junk silver entry in the catalog, melt value is:

melt value = face value × multiplier × spot price

Three inputs, one number out. The face value is the dollar denomination of the coin ($0.10 for a dime, $0.25 for a quarter, and so on). The multiplier is the ounces of silver contained in one dollar of face value, accounting for fineness and historical wear. The spot price is the live silver price per troy ounce.

The whole point of this approach is that it lets you count a roll, a bag, or a tube by adding up face value rather than weighing every coin. A $50 bag of pre-1965 quarters has a known silver content per dollar of face value, so the melt is $50 × 0.715 × spot, regardless of which specific quarters are in the bag.

Six pre-1965 US fractional silver products ship as part of the built-in catalog. Each one is recorded as one coin per inventory item, with the face value and multiplier baked in.

When you record a buy of junk silver in the app, the quantity is the count of individual coins, not a roll count or a bag count. Twenty pre-1965 quarters is quantity 20 against the Pre-1965 Quarter entry, not quantity 1 against "a roll of quarters."

Two multipliers cover all six entries. They reflect two different silver content levels in the underlying coinage.

US dimes, quarters, and half dollars minted before 1965 were struck in a 90% silver, 10% copper alloy. The mint produced each denomination on a weight schedule that worked out to roughly 0.7234 troy ounces of pure silver per $1 of face value at the original mint weight.

Decades of pocket-and-purse circulation took a small toll on every surviving coin — fingerprints, slight rim flattening, microscopic abrasion from coin-on-coin contact in tills and rolls.

The industry has settled on 0.715 as the practical figure: it gives a small haircut against the theoretical 0.7234 to reflect typical wear, and it's the number every junk silver dealer in the US uses to price bags and rolls by face value.

The 0.715 multiplier covers all four 90% silver entries in the catalog — dimes, quarters, half dollars, and the two silver dollars.

Half dollars minted from 1965 through 1970 are a different story. After Congress demonetized silver in 1965, the Kennedy half dollar continued to be minted with silver content — but at 40%, not 90%, and with the silver concentrated in two outer clad layers around a copper-silver inner core. Same denomination, very different metal content.

A $1 face value of 1965–1970 Kennedy halves contains roughly 0.295 oz of silver, and that's the multiplier the app uses for that entry specifically.

After 1970, the Kennedy half went to a copper-nickel clad with no silver content. Those coins aren't junk silver — they're just half dollars. They're not represented in the catalog because they have no metal value to track.

Concrete cases at $80 spot:

And at the bag level, where junk silver is more often traded:

The app does the same math on every individual coin you record, and rolls those up to product totals, metal totals, and dashboard totals across your portfolio. You don't need to track bags as separate units — record the count of individual coins and the bag-level numbers fall out of the rollups.

Junk silver items behave the same as any other inventory in most places, with a few small differences worth noting:

The name is a term of art. Pre-1965 US silver coinage was originally circulating money — coins people used at gas stations, lunch counters, and parking meters.

After silver was demonetized, the survivors carried no numismatic premium (most are common-date, well-circulated coins with no collector value), so the bullion world started calling them "junk silver" — meaning silver without numismatic value, traded purely for its metal content.

The coins themselves are perfectly fine. The "junk" descriptor is about the lack of collector premium, not about the condition of the coinage. A well-worn but recognizable Mercury dime is what the term is built around; a key-date Standing Liberty quarter in mint state is not junk silver, even though it's also a pre-1965 US silver quarter.

If you happen to own a key-date or graded silver coin from the pre-1965 era, the standard catalog or a custom product will fit it better than the generic junk silver entry, because the market price will be well above the melt calculation.

Pre-1965 US silver isn't the only fractional silver coinage in the world. Pre-decimal British silver (sixpence, shillings, florins, half crowns, crowns), Canadian silver dimes and quarters from before 1968, Mexican peso silver, and various other regional issues all have face values and silver content multipliers that work the same way as US junk silver.

The built-in catalog doesn't currently include these — they're regional, and the catalog stays focused on common US bullion and US junk. But if you hold a stack of pre-1968 Canadian quarters or a roll of British florins, you can set up a custom product with the calculation method set to Junk Silver and your own face value and multiplier.