Searching for Master Die Doubling Examples

I am undertaking a research project and I am searching for attributed examples of Master Die Doubling.

Can anyone help me by providing links?

My primary target range is 2004 to current. I am aware of examples on the 2022 American Women Quarters Series and on a 2023 Nickel. Are there any other examples?

I would also be interested in examples from 1980 through 2003.

(By the way: I have been searching!)

Any help appreciated!

 

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Both Mints, 1982 Washington Quarters:

https://doubleddie.com/1827525.html
https://doubleddie.com/1827546.html

 

Thank you!

 

There are three primary sites I use for varieties: Wexler, Variety Vista, and copper coins.

Google has this cool feature where you can narrow your search to a single site. Copy and paste each of these into Google:

"master die doubling" site:doubleddie.com
"master die doubling" site:coppercoins.com
"mdo" site:varietyvista.com

 

If it were me, I would subscribe to Coneca and get their master listings. Not sure about the moderns but from 80 to 03 should be updated. I am not sure about the pics though.

 

US coins only? https://www.error-ref.com/master-die-doubling/ shows 2006 Canadian nickels with master die doubling on the reverse.

Other examples I found don't meet your 1980-present criteria.

 

2019 shield cent
https://doubleddie.com/2474337.html

 

Thanks for helping!