Error experts, is this PMD or a mint error? - Large images

Moonbiter

Someone in our coin club found this Wash quarter. It's from a proof set, but he found it raw so we cannot verify that it is from a proof set, but it looks original skin.

If you look at the outside rim around the coin, you will see lines. They don't match up with the edge reeding and if you look close enough, they get further apart. they also are not all in the same direction around the coin, and don't completely go around the coin either.

What do you think this is? We are scratching our heads on this one, so I was able to take the coin home and photo it. If you need other shots, let me know and I will try and get other images of it and post them.

Thanks

Smittys

Damage
PMD

seanq

That coin is a proof, and it was damaged by the machine that created the proof set. The flat packs from the late 1950s/early 1960s were heat sealed, the coins were placed between two sheets of plastic and then a heating element pressed down to form the pocket for each denomination. In this case the quarter was not centered in its pocket and the heating element contacted it, causing that criss-cross pattern on the rim.

I've seen many coins from Mint Sets in the 1970s with similar damage, it is all from the same source. Even though the damage occurred within the walls of the Mint, it is considered a packaging defect and not an error.


Sean Reynolds

ricko

Interesting, thanks Sean, I learned something new today...Cheers, RickO

Moonbiter

Thanks for that explanation. Sounds logical to me, but we could not come up with what happened to it on Monday.