Do collared dies last longer than uncollared ones?

291fifth

I have no idea. Does anyone know the answer?

Unknown

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LindeDad

Just a guess but probably do last longer by keeping more even pressure on them. Also allow the press to run faster so more strikes per day.

ricko

The mystery of the week.....calling Fred W., dcarr, .... someone has the answer...Cheers, RickO

astrorat

Interesting question. Chris Pilliod would be a great resource. To bad he doesn't post here (that I know of).

Type2

This is a question for the great and powerfull Dan... I don't know as well.

BillJones

This is a hard question to answer from the U.S. series. The uncollared dies were used during the early days of the Philadelphia Mint when "steel" used in coin dies was of uneven quality. Some dies like the stemless wreath that was used on the 1804, 1805 and 1806 half cents lasted for all or parts of three years. The die was used on the 1808 C-1 half cent (the 8 over 7 obverse with the "office boy" reverse) may have lasted for only 100 to 200 impressions. Some of the early dies cracked during their preparatory stage.

The collared dies seemed to last longer in general, but of course there were exceptions. I would think that in general dies used with collars would last longer because the repetitive up and down motion would be more consistent which would result in fewer die chips on the sides (cuds) and more evenly applied pressure.

CaptHenway

Not sure what is meant by "collared dies."

There are several known instances of anvil dies that were heavily cracked staying together and continuing to be used POSSIBLY because the collar around the die held it together.

TD