DO YOU HAVE COIN DIES AND THEIR COAs?

I have been working on recording specifications of retired coin dies in a spreadsheet. These specifications are obtained from Certificates of Authenticity provided by the mint along with coin dies sold to the public.

That spreadsheet may be seen by clicking on the .pdf link in my article in CoinWeek, February 3, 2026, At this link:

https://coinweek.com/certificates-of-authenticity-for-retired-u-s-mint-dies-what-the-records-reveal/

I would be interested in seeing any COAs anyone may have so that I can keep a copy and add that information to this spreadsheet. (A photo example of this kind of COA is in the article).

If your dies show interesting marks that were not obliterated by being cancelled, can you show me images of them also?

I am also interested in photos of die serial numbers engraved onto the dies.

 

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I have this.

 

Thank you! I do think Encased Coins are interesting! A sample COA of the type I am looking for may be seen in the link.

 

I have a couple other ones also, but not the encased coins to go along with them.
But I'm looking.

 

@Pete Apple I've seen those both on auctions and eBay

 

I check eBay offerings daily for Dies with COAs. You are correct, dwhiz! they appear frequently!

Your dies are most interesting! These are the first dies I have seen for Encasements!

 

i own a few coin die sets , there awesome

 

i have always wanted to see if the u.s. mint would produce an updated list of all the die sets and there resons for decommisioning etc and years

 

You made me dig deep into the coin cabinet, @Pete Apple ! Looks like I have one that's not on your listing. Please let me know if anything else is needed other than what I've provided below. Great article in CoinWeek!

 

@BuffaloHunter PERFECT! Thank you! I will record this!

 

It's my pleasure! Isn't this a great hobby?

 

I used to own one of the state quarters sets like @BuffaloHunter showed. I was surprised at how heavy the dies are! I can't recall which state it was unfortunately.

 

Is that an S that was left in the die face?

 

I have a set of 1966 Lincoln dies.
I know where 1 is I will have to find the other.

 

To be honest, I’ve never looked at it that close. This was purchased by my late wife as she was from Chicago. Were you looking on the face, Phil?

 

10:30 in your photo? The S in Illinois.

 

Interesting article. One aspect got my attention - the fact that the example COA Denver die only produced 67,125 nickels and the expectation was 500,000. Back in the early 1900s the branch mints frequently complained about die life. It seems like some things never change.

 

I’ll have to dig it out again tomorrow and have a closer look. Stay tuned….