New Classification of Hub Doubling

[coppercoins]

Through discussion with others to include Billy Crawford regarding the doubled dies that have surfaced that are from the "single squeeze" days of die making (since 1997), a consensus has been reached that we need a new classification of the hub doubled dies that have come from this era. None of the eight currently published forms of hub doubling quite match what is visible on these coins.

Class 9, shifted hub doubling, will be added to the list of hub doubling classes on coppercoins.com. This is news in the sense that there has not been a new classification of hub doubling added to the group in roughly a decade now, since the addition of class 8, tilted hub doubling.

Class 9 doubled dies happen in the single squeeze technique of hubbing dies, and appear as doubled devices, usually near the center of the design, that show a degree of notching or misplaced devices that do not show separation lines. Classes 2, 4, and 6 are somewhat close to this new classification, but no one of these three can explain the doubling unto themselves, and moreover none of these have ever been evident since the single squeeze technique came into being.

This new class of hub doubling will be published in the new Lincoln cent book and will be further explored and explained as time permits on coppercoins.com.