I've been studying different kinds of die errors today, trying to assign the correct classifications to pennies I've previously been categorizing as "Weird", "Kinda Weird", and "Really Weird". Below is a 1959 D. Is this a lamination error? If you can't see it in the pic, the cent isn't perfectly round - the smashed-up side is, well, smashed up. And next . . . a 1989 d cent, with small but definitely discernible doubly bits underneath the word ONE. Hopefully you can see it on the photo. It was a hard one to catch with the camera. Is this another example of machine doubling? Many thanks! I'm learning so much on this forum!
the smashed up side is just that. It is post mint damage, probably run over. The 1989 d is looks like a type of machine doubling that some call plate shift doubling. no extra value Richard
I also, but I like the 1989D and probably would keep it. I have some MD cents that are rather interesting and keep them even though they are only worth 1 cent . Jim
So, what's the tip off between a coin damaged after the mint, and one that's damaged during the minting process?
I searched for "plate shift" doubling and couldn't find anything. Does it have another name? Strangely, I just now found another 1989 D with the same "error" but much more pronounced and on all the reverse text.
You can try this link to Ken Potter's examples of types of doubling. Hope it is useful. Bill http://koinpro.tripod.com/Articles/OtherFormsOfDoubling.htm
Hi, That's a great question that appears to be an easy one to answer. In fact it is easy. The difficulty comes with the need to understand the complete minting process from beginning to end. There are a finite set of circumstances that produce error coins and the resulting coins can be identified by knowing at which step or steps during the minting process the error occurred. That comes from studying the minting process. As you gain experience and as you ask questions here, you will pick up some of the information that can help you. By knowing what is possible, you can rule out what does not fit. By seeing similar coins being asked about, you can rule something in or out. The coin shown above to the experienced eye shows none of the characteristics of being an actual error but it does show many signs of it having been crushed and damaged by something outside of the mint. It was likely placed on a hard but rough surface and then hit with a hammer or some other heavy object. Thanks, Bill