|Figure 1: Obverse and reverse of the coin|
Thanks to the catalogue, I think most of Malaysian collector know about the so-called "extra dot" coin - particularly on 5 sen 1982, 50 sen 1979 and 50 sen 1988.
These variety is actually belongs to a type of error known as die gouge error. Die gouge error is a form of die error when a punching from sharp object was made onto the die, thus creating a hole. This hole, which is an incused element on the die will result in a raised element on the coin.
Being called as "extra dot" as this kind of error usually exhibits a dot-like features on the coin. So far three die gouge error coin has been put up in a local catalogue. Who knows more are coming soon?
Back to the matter of interest - the coin in this entry - die gouge error can be seen on the obverse of the coin. Taking shape of a water droplet, rather than the usual dot. Should we call this extra-comma? =D