55, 72 doubled die ? How were they made ?

rikker

I was wondering withe the 1955 and 1972 dd were they all run in oder all off one die or did they come from different dies? I know maybe I should break down and buy some more coin books.

ARCO

It is called hub doubling. Caused when the master hub used to make the working dies that stamp the out the coins is moved during the transfer process of creating a working die. I believe one Master is made and many dies are then created from the one master.

My guess is that it was one die only for both dates. When the dramatic effects of the doubling are seen the die is quickly retired. This condition is sometimes confused with another doubling effect called machine doubling. It fooled me until a mean ol' expert set me straight.




The true doubled die is created when the die is struck more than once by an improperly aligned hub. This creates die elements that are doubled. The most famous example of the true doubled die is the 1955/55 doubled die cent. Before hubbing was introduced, the dies were engraved or punched, creating doubling only on single elements.

The above paragraph is taken directly from the current article on this site.

Tyler

Spinynorman

There are at least nine different dies that had hub doubling for 1972 P mint cents. Die #5 was caused from a master die that was doubled. Around half of all 1972 cents (P, D, & S) have this doubling. Die #1 is the one most people recognize. The others are are less extreme on the doubling.

1955 P had at least three different doubled die obverses for circulating coins. Again die #1 is the big one.

koynekwest

Obtain any of the Wexler/Flynn books on doubled dies-it explains the hubbing process in excellent detail as does the latest edition of the Cherrypicker's guide.