Teach me....

[Guest]

I'm curious to know if the dies used to make proof coins are destroyed after their limited use and/or if they put them to use for business strike coins... Maybe its just me, but it seems like there are some early 60's business strike coins unattributed that look to be very similar to proof error's, etc... case in point the 1960P-1DO-004P

I've seen examples of this coin in hand as well as a coin that was presumably a business strike coin... showing the same attributes...

Hence the question... Was the business strike coin most likely a dirty proof or do they use those dies after their proof strikes are completed....

Enlightenment through knowledge

[Rollem]

Good question Stone. it would have been a waste of those dies. maybe 67 back 12 years.

James

[mustbebob]

They would not have used proof dies to purposely strike business strike coins. However, mistakes have been made before as we are aware of with the Wide AM coins.

[onecent1909]

I have a question plus some info to add....the "type B" reverse 1956 to 1964 quarters... proof dies on circulation coins....I have 1 a year except 1958...SOME of my coins are die cracked...I have always wondered..did the dies crack while striking proofs...then transferred to circulation striking....or did they crack while striking circulation coins?..dose any one have 1956 to 1964 quarter proofs? to check for cracking?
if this was the case..MAYBE they did more cent proof dies around.....any thoughts?

[stonecad]

Thanks Bob... I assumed as much with the post 93 coins but was unsure about the pre-93 dies... the Wide AM's being discoverable only because they slightly changed the design... To my untrained eye - the 60P above seems to have a shelf like MD... I dont doubt its attribution, its just difficult at this stage of my experience to know whats what...

Anyways, thank you for your time and knowledge.

[mustbebob]

ONECENT...The Type B reverse dies cracked while striking the business strike coins. They were not used to strike proof coins at all. The areas of cracking are the same whether on the business strike, or Proof struck coins. It is an inherent weak point on the dies.
These were cases where they inadvertently used proof dies to strike business strike coins like the wide AMs were. Seems like they had a problem for a lot of years. I managed to find quite a few of the Type B reverse quarters pretty easily.

[onecent1909]

Thanks I love the Proof on circ or circ on proof.... have Franklin, Washington, Lincoln,and Roosevelt.....need to find a difference on Jefferson for a set

[liveandievarieties]

Point of clarification Bob- Were they actually proof dies (WAMs) or were they business strike dies made from proof style master dies? My understanding is that the process for manufacturing a proof die is quite different from that of a business strike die. Additionally, I do know that actual working proof dies are much thicker at their base, literally about 3x as fat to compensate for the additional pressure of multiple strikes.

Using a proof die on a business strike planchet would still result in highly mirror-like surfaces.

Not trying to be nit-picky but there is a big difference between an actual proof die and a design type on a woking business strike die.

I am not aware of any die in modern times that was used to strike proof coins, then converted to use for business strike coins.

Below, on the far left, you see a proof cent die, the 2 in the middle are business strike cent dies.

[mustbebob]

You may very well be absolutely correct Chris, and the clarification is definitely justified. Whether or not the proof dies were actually used, or just the proof design (Hub) is not something I knew off hand, so I did the research to educate myself.
In the case of the Wide AMs, the Red Book states the dies were used, while the Cherry Pickers Guide does state that the Type B (proof) Hub was inadvertently used to make dies for the Washington Quarters.
Thanks bunches!

[pman860507]

I lust over theese topics. Thanks everyone for the info.