Posted 10/01/2012 10:27 pm
Repunched dates (RPD's) usually fall into two categories: First, sometimes the person handpunching a date into a die makes a slight miss on the second punch - usually more than one is necessary to get a deep-enough punch - leading to date doubling, sometimes pretty prominent. Second, on occasion a new date was punched into an old die, usually because of the need for additional dies or to make economic use of an unused older die.
These are good things.
Some have no real additional value due to commonality or lack of demand, but there are some very pricey RPD's associated with certain mintages. They're usually considered mint errors and identifiable varieties, and as such have appeal to those who collect by variety.
Caveat: There is also Machine Doubling, a function of one die "bouncing" during the strike, which can show similar appearance. MD is not usually considered to be of much interest/added value, but some of it can be pretty cool to look at.
These are good things.
Some have no real additional value due to commonality or lack of demand, but there are some very pricey RPD's associated with certain mintages. They're usually considered mint errors and identifiable varieties, and as such have appeal to those who collect by variety.
Caveat: There is also Machine Doubling, a function of one die "bouncing" during the strike, which can show similar appearance. MD is not usually considered to be of much interest/added value, but some of it can be pretty cool to look at.
