Mechanical Doubling Versus Doubled Die

[Merlin8971]

I noticed a number of times coins that appear to be doubled dies are classified as mechanical doubling. Now I do understand the difference between mechanical doubling (the die double stamping the coin with a slight shift of the coin in between and the Master Die hitting the coining die twice when making the working die). My question is how does one tell the difference between the two varieties?

I deduce that in doubled dies there are a number of coins that are all stamped with the same doubled characteristics with little variation. Mechanical doubling is a one of type of doubling that varies with each coin that is stamped in this fashion.

I would also deduce that Mechanical doubling would be more extensive in that if a coin shifts while the die bounces that much more of the coin will be "doubled." An example I envision is that in a doubled die, lets say, some letters of "In God We Trust" show doubling and that a number of coins are produced with this variety, whereas, in Mechanical doubling "In God We Trust," the Date, and "Liberty" and possibly the image are ALL doubled and even at times the other side of the coin also shows doubling.

Another question is IF a coin is found and there IS NO classified doubled die associated with the coin, would that be the first hint that the coin may have undergone a Mechanical doubling rather than a doubled die. I have several 1994 quarters that show doubling in "In God We Trust" but I haven't found a variation listing for the 1994 quarter.

Thank for any information you can give.

[diamond]

I noticed a number of times coins that appear to be doubled dies are classified as mechanical doubling. Now I do understand the difference between mechanical doubling (the die double stamping the coin with a slight shift of the coin in between and the Master Die hitting the coining die twice when making the working die). My question is how does one tell the difference between the two varieties?

Your understanding of these two forms of doubling, as well as the terminology you use is woefully inaccurate. I suggest you purchase a copy of the Cherrypicker's Guide and read up on the different types of doubling. You can start with this article:

www.libertynickels.org/downloads/DieDoubling.pdf

I deduce that in doubled dies there are a number of coins that are all stamped with the same doubled characteristics with little variation.

They will show NO variation from coin to coin.

Mechanical doubling is a one of type of doubling that varies with each coin that is stamped in this fashion.

Depends. Some runs of machine-doubled coins are virtually identical in appearance. Others vary wildly.

I would also deduce that Mechanical doubling would be more extensive in that if a coin shifts while the die bounces that much more of the coin will be "doubled."

The coin doesn't shift in machine doubling; the die shifts.

An example I envision is that in a doubled die, lets say, some letters of "In God We Trust" show doubling and that a number of coins are produced with this variety, whereas, in Mechanical doubling "In God We Trust," the Date, and "Liberty" and possibly the image are ALL doubled and even at times the other side of the coin also shows doubling.

The extent of machine doubling seen on any coin is highly variable. It can be quite localized.

Another question is IF a coin is found and there IS NO classified doubled die associated with the coin, would that be the first hint that the coin may have undergone a Mechanical doubling rather than a doubled die.

There are many other forms of doubling. Die deterioration is quite common.

I have several 1994 quarters that show doubling in "In God We Trust" but I haven't found a variation listing for the 1994 quarter.

Both die deterioration doubling and machine doubling commonly affect IGWT in quarters.

Thank for any information you can give.

[Merlin8971]

Woefully Inadequate

Considering that six months ago I DID NOT know the meaning of numismatics, let alone how to pronounce the word (pronounced "coin collecting" ) I think my progress in learning is coming along quite nicely, Thank you.

I came to this site because it SEEMED like a place where I could LEARN MORE about numismatics by asking questions, "KNOWLEDGE THROUGH EDUCATION," which I will continue to do.

I did go to the site suggested, read it, and even took the ten question test at the end. I got eight of the ten questions correct (without cheating), so my learning ability is re-affirmed.