Malaya British Borneo Off-Center Strike Error Coins


When coins are being struck,the lower die ( bottom die) is surround by a collar.This collar floats on springs,which prevents damage to the coinage press if there is a malfunction.When the planchet is feed into the mint press,it should rest inside the collar on the reverse die(anvil die).If the planchet does not rest completely inside the collar, you will have an Off-Center Struck coin.Only part of the coin will show the design.Since the collar floats beside the die,it is pushed down if the planchet is resting on the the collar during the striking process.
To be an Off-Center Struck coin,both the obverse and the reverse must be equally off center and part of the design elements must be missing.If only one side of the coin is off center,it is a Misaligned Die Errors.

Queen Elizabeth.1961H.20 Cents.
Off-Center Strike Errors.Obverse.
(Bob Chew Collection)
This Queen Elizabeth.1961H.20 Cents is still in very good condition, almost uncirculated,was struck off center and,naturally,out of collar.Some of the obverse and reverse design elements (including denticles when included as part of the design) were missing.This usually occurs when a planchet does not rest in its proper position inside the press.
Queen Elizabeth.1961H.20 Cents.
Off-Center Strike Errors.Reverse.
(Bob Chew Collection)
The most desirable off-center strikes are those coins which are in uncirculated condition,scarce dates,low mintage,obsolete,old coinage etc.

Off-Center strike Errors are always landed without mill edge and empty portion of the planchet were formed a curve.


  1. Hi Dickson,
    We've seen off-centers, double strikes or even double denominations with the whole milled edges intact, on sale in the market.
    And they are by no means cheap.
    Are these assisted errors?
    Thanks alot :)

  2. Dear Whycollect,off-center is different from Double Off-Center.A Double Off-Center Error coin is a coin after being struck in a normal coinage press process (with milled edge intact),the coin is suppose to exit the coinage press and go to a collecting area, but the coin does not eject properly and falls partially inside the collar, it is struck again. This is how we get Double Struck coins.
    Double denomination is a struck coin (with milled edge) must fit inside the collar of the second denomination to be struck again.As an example, you could never have a 50 Cents struck coin being struck a second time by a cent dies.
    Beware,last year(2010),I saw some assisted Double Struck coins sold in Amcorp Mall.Those were King George and King Edward original coinage,counter struck manually with a second bust,however,the second manualed struck was too weak to flatten the details/design of the earlier struck.Please be very careful!

  3. Hi Dickson,
    Yes, we've seen these KGV & KE coins too which prompted us to ask you about these double strucks with milled edge intact even on the thinner struck section which looked like the 2nd struck.
    Luckily for us too, we didn't buy any one of these coins because of doubts like you've mentioned the 2nd struck was just too weak to justify its authenticity. In fact we would have bought a few of them if their prices were cheap enough, just for references sake. But they were being sold at high prices which prevented us from going ahead with the purchase.
    Thanks alot for the invaluable information.
    These information we believe are extremely important for error coin collectors.
    Cheers :)