Numismatics information about Indian currency

04/05/2016

Misalagned die & rotated coin ©

05/02/2016

15/01/2016

09/11/2015

ofter minting a type of coin in machin
some blanks strucks in machin
in the process of next varity coins
the coin minting on strucked coins that is oms (otcher metal strike)

25/10/2015

In numismatics, a mule is a coin or medal minted with obverse and reverse designs not normally seen on the same piece. These can be intentional or produced by error. This type of error is highly sought after, and examples can fetch steep prices from collectors.

The earliest mules are found among ancient Greek and Roman coins. Opinion is divided between those who think that they are accidental, the result of an incorrect combination of a new die with one that had officially been withdrawn from use, or the work of coiners working with dies stolen from an official mint, perhaps at a time when one of them should have been destroyed.

The name derives from the mule, the hybrid offspring of a horse and a donkey, due to such a coin having two sides intended for different coins, much as a mule has parents of two different species.

27/09/2015

OMS [Off Metal Strike]

This type of error happens when the coin is minted on a metal that it is not intended for. There are 2 ways in which this can occur;

One is the metal alloy that is being used to strike the coins comes in different alloy mix percentage than specified. For example the Ferritic stainless steel [FSS] used for the current coins is a combination of Iron 82% and Chromium 18%. If the metal delivered to mint comes in say more Iron content, say 90%, then the coin will be more Iron and will have different characteristics than the FSS.

The second way this can occur is if there are 2 coins being minted with similar metal [not distinguishable easily to normal eye] and there is a mix up in the feeding the metal alloy sheet to the blanking machine. For example from 1964 to 1971 the 50 Paise was minted using Pure Nickel, the 10 paise from 1964 to 1967 was minted in Cupro Nickel and from 1968 to 1971 it was Nickel Brass. All the metals look same in raw form and develop distinctive toning after finishing. Hence if Cupro Nickel sheet was used to mint the 50 Paise it would have been OMS. Note that for the coins specified there was a slight difference in thickness of the coins [which means that the OMS coins would have been of different thickness as well].

There are very few known and accepted OMS error coins in Republic India coinage.

20/07/2015

1904 Edward one rupee
Silver coin rare

08/07/2015

5 rupees 1sh eshu b.ramarao 3deer

07/07/2015

princela state nizam coins

18/06/2015

Hear is RBI governors all

11/06/2015

Britesh india
One rupee silver coin 1900
Victorya empress

26/05/2015

Die off center ( error)