1964 D Jefferson Nickel. DDR and RPM? 1 1

[bobbyboshay]

Edited August 12 by bobbyboshay

[Sandon]

   This 1964-D nickel appears to have shelf-like strike doubling, a.k.a. machine or mechanical doubling on both the reverse lettering and the mint mark. A mint marked doubled die from before 1992 wouldn't show die doubling on the mint mark, as mint marks were not in the hub but were punched in separately.  It is possible that a coin could have both a doubled die and a repunched mint mark, but the secondary image from either cause would be crisper and more rounded than that shown here.

[RWB]

Mechanical doubling. If you can find a 2nd, identical coin, then more investigation would be in order.