---
title: "Junk Silver Explained: How Much Silver Is in Pre-1965 US Coins"
description: "Pre-1965 dimes, quarters and halves are 90% silver. How much silver each holds, how to value a pile of them, and how to check a 'times face' quote."
url: https://mycoinstack.app/blog/junk-silver-explained/
author: "The My Coin Stack Team"
published: 2026-10-13
category: "Collecting Guides"
keywords: ["junk silver", "90% silver", "constitutional silver", "melt value", "silver dimes", "key dates"]
---

# Junk Silver Explained: How Much Silver Is in Pre-1965 US Coins

"Junk silver" is an unflattering name for something a lot of stackers love: circulated US coins from 1964 and earlier, made of 90% silver. They're called junk because they're worth their metal rather than any collectible value, not because there's anything wrong with them. You'll also hear them called **constitutional silver** or **90% silver**.

## Which coins count

Until 1965, US dimes, quarters and half dollars were struck in an alloy of 90% silver and 10% copper. Silver dollars (Morgans and Peace dollars) used the same alloy. That gives you a fixed, known amount of silver in every coin:

| Coin | Typical series | Pure silver per coin |
| --- | --- | --- |
| Dime | Barber, Mercury, Roosevelt (to 1964) | 0.07234 troy oz |
| Quarter | Barber, Standing Liberty, Washington (to 1964) | 0.18084 troy oz |
| Half dollar | Barber, Walking Liberty, Franklin, 1964 Kennedy | 0.36169 troy oz |
| Dollar | Morgan, Peace | 0.77344 troy oz |

Because dimes, quarters and halves were made in exact proportion to their face value, **$1 face value of any mix of them contains about 0.723 troy ounces of silver** when new. Coins that have circulated for decades have lost a little to wear, so dealers commonly use **0.715 oz per $1 face** as the working figure.

Silver dollars don't follow that ratio (they hold more silver per dollar of face), and they often carry a collector premium, so they're usually priced separately.

## The coins that look like junk silver but aren't

Two series catch people out:

- **1965–1970 Kennedy half dollars** are 40% silver, not 90%. Each holds about 0.148 troy oz.
- **1942–1945 "war nickels"** are 35% silver, about 0.056 troy oz each. You can spot them by the large mint mark above Monticello on the reverse.

And from 1965 onward, dimes and quarters contain no silver at all.

## How to value a pile of junk silver

Add up the pure silver, then multiply by spot:

> **Melt value = number of coins × silver per coin × spot price**

Forty Mercury dimes, for example, is $4.00 face value and 2.89357 troy ounces of silver (40 × 0.07234). At a silver spot price of $50, that's $144.68 of silver.

Counting rolls is quicker. A standard roll holds **50 dimes** ($5 face), **40 quarters** ($10 face) or **20 half dollars** ($10 face).

## Checking a "times face" quote

Dealers usually quote junk silver as a multiple of face value: "35× face" means $35 for every $1 of face value. To compare that with spot, work out what $1 face is worth in metal:

> **Melt per $1 face = 0.715 × spot price**

At a $50 spot, $1 face holds $35.75 of silver, so a quote of 35× face is right at melt, and 38× face is about a 6% premium. Run the same check every time; the multiple moves with spot, and a quote that was fair last month may not be today.

## Look before you lump it in

Junk silver is sold by weight, and nobody checks every date. That's the point: if you're *buying*, it's fast and simple. If you're *selling*, or sorting an inherited jar, look first. A few dates are worth far more than their silver. The 1916-D Mercury dime and the 1932-D and 1932-S Washington quarters are the famous ones, and none of them belongs in a bag sold at melt.

## Doing it in My Coin Stack

The Buy Analyzer has a dedicated [constitutional silver calculator](https://mycoinstack.app/features/analyzer). Pick the coin, then count the coins, enter the face value, count rolls or just weigh the lot, whichever is easiest. It gives you face value, pure silver content and melt at today's live spot price, plus a check against any "times face" offer you've been quoted.

And when you're sorting, the [coin catalog](https://mycoinstack.app/features/catalog) badges key dates, so the expensive years announce themselves before they go in the bag.

*This article is general information, not financial advice. Silver content figures are for coins at full original weight.*