2016 P - Harper's Ferry Quarter Incuse Doubling Question - Reverse

[Parth]

Hi,

I'm rather new to CRH and am struggling to understand raised Doubled Die's vs Incuse Double Die's vs Machine Doubling. I have a Harper's Ferry Quarter with potential Doubling on West Virginia. I sent a Quarter in last week and was given a short explanation, but I think I need more of an elaborate explanation to understand it better. Thanks for reviewing.

Parth

[MintErrors]

In my opinion, the incuse portion on a coin means it has to be raised on the working die. So those raised devices first contact the metal planchet. Those letters start digging into the planchet and I believe there is some small movement of the planchet or the working die. The presses run at jack hammer speeds so a blank planchet is made quicker than the blink of an eye.

Quite a few years ago, there was a rather lengthy debate about incuse doubling. It was a general agreement that incused letters that were on most of these modern quarters were not actual hub doubling but an actual issue with the way the coins were being struck with the dies.

Any time a press that can do anywhere from 10 to 50 tons of pressure, where its a battle of metal vs metal, working die versus the planchet, something is bound to move, slip or otherwise. To me, if the only portion of the doubling appears on the incused side and no where else, it becomes suspect of machine related issues.

To me, logically thinking, that a working die with more than one impression (a doubled die) thats only on the incused area of the coin and none is apparent on any other devices that are raised on tne coin, I then tend to assess its a mechanical issue.

Personally, i know of zero doubled dies where the doubling is concentrated on the incused areas of these quarters. I have personally owned some of these modern quarters with this incused chattering. I got rid of most of them and only kept a handful to write education posts, documenting the issue.