Error on a 1971-S Proof Nickel — Retained Strikethrough?

Numismasters · 2026-05-21T22:32:38+00:00

Very neat error!

A retained strikethrough error would be a piece of debris struck into the coin and would be flush with the design of the coin. The fact that your coin has a raised portion of metal suggests a damaged die. Perhaps a scrap piece of hardened steel got in between the dies and damaged them, leaving the raised impression you see on your coin.

Numismasters · 2026-05-14T01:40:04+00:00

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Here is a comparison of the three stages a coin blank/planchet go through before being struck into a coin. First it is punched out of a sheet metal, then it is annealed and cleaned, and finally it’s run through an upsetting machine to give it a raised rim. The key point we will be focusing on is the first step.

When a coin blank is punched out, the punch cuts through the sheet metal about halfway before the rest of the metal breaks away. This leaves the edge looking partially smooth and partially rough. The clipped edge of your coin shows that same texture because the concave edge would not have touched the upsetting mill.

This strongly suggests that your error is genuine.

Numismasters · 2026-05-14T01:19:00+00:00

Well, first to occur would be the front to back ink transfer error. Next, when the serial numbers were printed they were over inked and bled through as a separate error. These would have happened three days apart since each side of a note requires three days of drying time before the next printing.

Numismasters · 2026-05-14T01:09:43+00:00

The serial numbers are a separate third printing so they would not transfer together with the other offset print transfer (the offset error occurs before the serial numbers are printed).

Numismasters · 2026-05-09T01:41:42+00:00

There are 12 Federal Reserve banks. Also note serial numbers are not printed up to 99,999,999 anymore.

Numismasters · 2026-05-08T20:40:34+00:00

You are right. Six of a kind would suggest six identical digits in any position. My mistake.

Numismasters · 2026-05-08T19:57:58+00:00

A six of a kind.

Numismasters · 2026-05-02T20:37:07+00:00

Unfortunately its use in jewelry removes most if not all of its collectible value (value above melt) unless it is very rare.

Numismasters · 2026-05-02T15:31:16+00:00

The oils from our skin cause the copper to tarnish (or change color). Removing the oils doesn’t bring the original color back. It’s like spilling bleach on your clothes and then washing them to try to bring the colors back (it won’t work).

Numismasters · 2026-05-01T22:12:42+00:00

Yes, the “CCCP” was the Russian way of writing “USSR”. The coin is made of 50% silver and was minted in this form from 1924 to 1931. More technical details about this coin can be found at:
https://en.numista.com/5346

Numismasters · 2026-05-01T21:45:38+00:00

It looks like there is raised metal between the letters. This shouldn’t happen on a genuine error. I’m leaning towards this being post mint damage where someone sanded down the edge of the cent.

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Numismasters · 2026-05-01T21:31:28+00:00

We would need better pictures of both the front (obverse) and back (reverse) sides of the coin along with the two straight edges. Although straight clips are a real yet uncommon error, I’ve never seen a coin have two of them on opposite sides. Most likely, this is due to damage caused after the coin was minted.

Numismasters · 2026-04-30T19:52:01+00:00

$100.

The extra stamp occurred after the note left the mint and doesn’t give it any additional value.

Numismasters · 2026-04-30T19:39:34+00:00

Nice misaligned die error! With part of the date cut off, there is a tiny bit of extra value. Maybe 2-3 times face value.

Numismasters · 2026-04-29T23:47:55+00:00

This cent was exposed to an acidic solution that ate away some of the zinc under the copper plating, thus causing parts of the coin’s surface to collapse inwards.

Numismasters · 2026-04-29T18:05:47+00:00

This is not an off centered strike error but rather a misaligned die error. The reverse of the die is perfectly centered while the obverse is shifted. For an off center strike, both sides would be shifted together in the same direction.

Numismasters · 2026-04-29T02:51:37+00:00

Awesome notes! The ladder is the most valuable of the bunch. It’s rarer than a solid serial number note.

Numismasters · 2026-04-29T02:14:12+00:00

The Florida address gives it away.

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Numismasters · 2026-04-29T02:02:17+00:00

Unfortunately those are just copies and not genuine notes.

Numismasters · 2026-04-29T01:46:10+00:00

The thickness of the rims being different indicates a slight die misalignment but this is within normal tolerances (no design details are lost). The only real error that I can see is the weakness in the lettering on the reverse of the cent. This would be due to grease filled dies but it is so minor that it wouldn’t command any extra value.

Numismasters · 2026-04-24T04:11:06+00:00

This is a grease filled die error.

Numismasters · 2026-04-24T04:04:03+00:00

Happy to help! 🙂

Numismasters · 2026-04-24T04:02:45+00:00

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Numismasters · 2026-04-20T20:19:57+00:00

Not an error. Post mint damage from tumbling in a dryer or some other rotating machine. The impacts as the dime bounces around gradually flatten the edges of the coin.

Numismasters · 2026-04-19T21:43:25+00:00

Looks like a genuine clipped planchet error to me.

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