1960 P 1c Modified Hub Doubling #3 +clipped Planchet

I guess DDD can spread away from the rim. Here is an example from error-ref.com. This doesn't look like what is happening on this 1960 1c though especially since multiple dies are involved.



It's been difficult getting the attribution experts to respond to this but I will update if I hear anything.

It looks like DDD except it didn't occur on a working die. So how do we explain DDD on a working hub that only produces less than a thousand working dies?

Here's a couple more photos from Ray Parkhurst.

The flat linear bar above the 9 is present on all examples and could represent a tool mark. Also the outer double crescent loop on the upper 9 looks like it could be from abrasion passes. If so, would the mint try and polish out DDD on a working hub?

Another feature I'm looking at is the upper secondary curve point of the 6. It looks like it may be completely isolated from the primary 6 which wouldn't happen with DDD.

Question: Can polishing out raised digits produce incuse digits?

All of the examples of Die Deterioration incuse doubling on error-ref.com show movement towards the rim. https://www.error-ref.com/?s=die+de...ion+doubling

Thanks for the conversation with this oddity.

Interesting discussion. Here's more potpourri for the pot, and a good CoinWorld article.
https://www.error-ref.com/?s=Rotati...ine+Doubling

Adding another photo I just put together. I think this shows the tooling around the 9 well. The top bar above the 9 looks like a tool mark. The inside lower curve of the 9 is straighter than the primary 9's curve which could mean the filing reshaped it. The two outer upper secondary loops of the 9 could be the result of multiple abrasive passes. Just guesses but I am open to other opinions.

I found one of these a few years ago. I posted the coin but can't remember what some the were. I think I will go and see if I can find the post.

Congratulations!