- These appear to be composed of the standard alloy, so they wouldn't
be off-metal errors. Diameter is normal, so they wouldn't be wrong
planchet errors, either.
The one on the left would most likely be a cent struck on a planchet
punched out of cent stock that was rolled too thin (a "rolled-thin"
error). The coin on the right seems to have a very rough surface.
It might have been immersed in a corrosive liquid (an "acid job"),
and would therefore not be an error.
--- In email@example.com, "Kevin"
> I have 2 1952 off-metal cents in the off metal folder one is 2.5gand
> the other is 2.6g.