1960s heavy flan pennies

[absence of uniformity]

Can I ask please; Does anyone know whether its common to see a small raised rim around the edge of pennies. The 1965 penny @RChris has listed on ebay and the 1966 heavy flan coin sold through LCA both coins have what appears to thin raised lips on the edge of the rims? Is this because of excess metal? Because the flan is thicker the excess metal is forced up around the sides of the dies?

The reason I ask is because I found a coin online which I purchased which has the raised rim/lip identical to the 1966 heavy flan coin. The raised lip is in exactly the same location on the obverse and reverse sam start and end locations to the coin shown on LCA. 

I have started at looking at 1966 Pennies and have not see another yet with this raised detail around the edge of the coin.

Is it a coincidence the two heavy flan pennies sold through LCA show this feature? Is it also a coincidence the 1966 I found matches exactly that of the LCA coin? 

And to be clear  by matches exactly the raised lip starts and ends in the same location on the obverse and reverse.

 

Thanks

 

 

Edited Saturday at 01:06 PM by absence of uniformity

[absence of uniformity]

The 1967 heavy flan coin @secret santa purchased from LCA also appears to show this feature. Although not as pronounced. You would of thought Given the 1967 coin was the heaviest out of the 65 and the 66 at 13.43 grams this should of shown the most amount of excess metal around the edge..? If this detail is infact caused by excess metal being forced/Flowing up the side of the dies, is this even possible?

Thanks

[absence of uniformity]

Given coins are being checked on conveyors Im assuming this quality control step is looking at coin blanks only? If it was checking struck coins alot of room for error only looking at one face of a coin? They must be checking for incomplete/damage blanks?

This image is from 1966 right in the middle of 1965, 1966, 1967 coins.

Edited Saturday at 12:59 PM by absence of uniformity

[absence of uniformity]

I also noticed the 1967 penny struck in cupro nickel the size and weight of the coin possibly matches a Florin.

The CUNI penny is pretty much same weight as a Florin with the penny being slighter larger.Looking at the CUNI penny you can see about 1.5/2mm of the rim missing. And the Florin coin is roughly that much smaller than a penny.

[Rob]

1 hour ago, absence of uniformity said:

The 1967 heavy flan coin @secret santa purchased from LCA also appears to show this feature. Although not as pronounced. You would of thought Given the 1967 coin was the heaviest out of the 65 and the 66 at 13.43 grams this should of shown the most amount of excess metal around the edge..? If this detail is infact caused by excess metal being forced/Flowing up the side of the dies, is this even possible?

Thanks

Depends on the age of the collar, and how intact the links are. Eventually it will burst with a resulting mistrike, likely quite spectacular. A small ring of raised excess metal is a good diagnostic tool for working out how much circulation the coin has seen. If still visible and obviously worn down, it ain't unc, despite offering some added protection to the die relief.

[absence of uniformity]

On 7/18/2026 at 4:18 PM, Rob said:

Depends on the age of the collar, and how intact the links are. Eventually it will burst with a resulting mistrike, likely quite spectacular. A small ring of raised excess metal is a good diagnostic tool for working out how much circulation the coin has seen. If still visible and obviously worn down, it ain't unc, despite offering some added protection to the die relief.

So its pretty common on uncirculated coins ok thank you.

Im guessing the penny I purchased won't be overweight then.

 

 

[Rob]

There are very few rules in play, only generalities due to the number of variables involved. Most will conform to type, but there is always the exception, hence the need to keep an open mind regarding potential alternative explanations. If an unc coin is determined by wear to the struck relief detail, then it could stay 'unc' for a while until sufficient protection has worn away to affect the die struck detail. That is why practically as struck could be considered aposite, but then, there will never be a consensus, only your own viewpoint.