Niewmismatic Error Coins

Malaysia Bunga Raya Series 2005 10 Cents Struck On 1 Cent Planchet
Rarity:RRR/MS65RD
Wrong planchet and off-metal errors occur when a correctly made blank from one denomination is accidentaly fed into a press for another denomination.
When a planchet is struck by a pair of dies that do not correspond to the denomination intended for the planchet, a wrong planchet error occurs. For example a 2005 Malaysia Bunga Raya Series  10 Cents coin struck on a cent planchet will have the same weight and copper composition as a cent. It will likely be smaller than a normal 10 Cents coin, but probably slightly larger than a normal size of a cent because the 10 Cents collar die cannot restrain the smaller cent planchet from expanding.
The "Wrong Planchet" or "Wrong Metal" error frequently occurs when a tote bin fails to be emptied with all the planchets and a planchet may still remains stuck in a corner or in the groove of a tote bin door. If the bin is then used to transport planchets for a larger diameter blank or planchet, the wayward blanks, still retained in the bin may be transported to a coining operation of another denomination and struck with that denomination's details.