Proof coin miss strike or doubling? 0

[wetice]

Here a 2000s quarter from a 2000s (10) coin silver Us Proof set. All number and letter devices have "smeared" proof layer. no doubling evident at this eye view. Some "smearing" on bottom of Washingtons ribbon. Reverese is fine, as is all other coins. NOTE: there are no physical deformations of the devices, e.g, split serifs, machine doubling. Its like misslayered icing on a cake. Any ideas? Thank you Don

[RWB]

Modern US proof coins are struck twice on a special press. This coin looks like there was a slight jiggle between blows, or mechanical doubling during one blow. This letter from 1973 is germane and will provide some possible answers.

 

Edited September 11, 2020 by RWB

[wetice]

2 minutes ago, RWB said:

Modern US proof coins are struck twice on a special press. This coin looks like there was a slight jiggle between blows, or mechanical  doubling during one blow.

No typical machine type doubling evident. The devices have solid foundations, no "stepping" or "sliding" of device letters or numbers. Just the frost element is off center. What would I call this?

[RWB]

Check the letter added to the reply.

[wetice]

Wow! Nice letter. So not in the die or poor hubbing. A double strike error? Have you seen one or one such labeled?

[wetice]

Thank you for for posting the very informative letter. 

[Coinbuf]

Many of the letters do indeed show what would be considered a true double die effect.  I do not think it would be considered a double die as the die was not doubled but it is a mint error as something shifted between the two strikes.  Very cool.

[wetice]

[wetice]

These photos show more frosty detail. A 2nd strike error, or misaligned die set; Trial proof? Earthquake, tremor? what would I label this? Have you seen one yourself? Thanks for the posted info.

[RWB]

I do not feel we know enough about production of modern proofs - and all the problems that accompany the technology - to make more than hesitant guesses. The 1973 letter is a good example - there is no follow-up about what was done, what was discovered, how it occurred and the remedy.

Edited September 12, 2020 by RWB

[wetice]

Thank you for for posting the very informative letter. 

[wetice]

An enigma for now. Thank you for all the information given here.