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What is a "Doubled Die?"

A doubled die coin has nothing to do with the multiple striking of a coin as many believe. A doubled die coin is the result of using a working die(s) which has/have been improperly made. The manner in which a coin is produced is the result of using a specially prepared set of dies which have been mechanically created to provide the desired images we see on a given coin. These images are engraved on a "special metal blank" which, when completed, will be used to create multiple "working dies" (obverse and reverse) which will be the ones used to strike a round, flat piece of metal with the images contained on the end of these dies. The process of creating the working dies uses these "master engraved dies" to force their image, termed "a squeeze", onto/into another piece of metal. Prior to the 2000's or so (varies per coin value), the "squeeze" process involved pressing the image twice or more when creating the "working die" and this point is where "Doubled Die(s)" is/are created if the "second squeeze" is slightly out of alignment relative to the "first squeeze". The result is a misaligned image on the working die(s) which will be transferred to the coin blank in the coin production process.

Step 1: Engrave "Master."
Step 2: "Squeeze" "Master" image onto working die(s).
Step 3: Second "Squeeze" of working die(s). * Second squeeze, out of alignment, creates "Doubled Working Die(s)."
Step 4: "Doubled Working Die(s) in coin production, create "Doubled Die(s) coins.

Is a "Doubled Die" coin an "error" or the "result of an error?"
IMO, the doubled die coin is the result of an improperly produced working die which creates a coin variation of the required result.

What are "Errors?" What ever today's definition happens to be.

 

What is a "Doubled Die?"

A doubled die coin has nothing to do with the multiple striking of a coin as many believe. A doubled die coin is the result of using a working die(s) which has/have been improperly made. The manner in which a coin is produced is the result of using a specially prepared set of dies which have been mechanically created to provide the desired images we see on a given coin. These images are engraved on a "special metal blank" which, when completed, will be used to create multiple "working dies" (obverse and reverse) which will be the ones used to strike a round, flat piece of metal with the images contained on the end of these dies. The process of creating the working dies uses these "master engraved dies" to force their image, termed "a squeeze", onto/into another piece of metal. Prior to the 2000's or so (varies per coin value), the "squeeze" process involved pressing the image twice or more when creating the "working die" and this point is where "Doubled Die(s)" is/are created if the "second squeeze" is slightly out of alignment relative to the "first squeeze". The result is a misaligned image on the working die(s) which will be transferred to the coin blank in the coin production process.

Step 1: Engrave "Master."
Step 2: "Squeeze" "Master" image onto working die(s).
Step 3: Second "Squeeze" of working die(s). * Second squeeze, out of alignment, creates "Doubled Working Die(s)."
Step 4: "Doubled Working Die(s) in coin production, create "Doubled Die(s) coins.

Is a "Doubled Die" coin an "error" or the "result of an error?"
IMO, the doubled die coin is the result of an improperly produced working die which creates a coin variation of the required result.

What are "Errors?" What ever today's definition happens to be.