Hi Dickson, The latest specimen that we've found was a 1996 10sen though the extra irregular layer of metal flowing down along the rim is not as evident as your specimen here. This effect make us feel like making kuih kapit, haha.
Dear my-way, Most welcome and thank you to visit my Blog! I also collected a few pieces of similar errors. It may be caused by the over pressure of striking.This errors are most found on small denominations,especially 5 cents coin. 50 ton per square inch of pressure was used to strike 5 cent coin,after long hours of striking process,the tonnages may various,greater tonnages of striking may happen.Great tonnages will lead to high heat,the surface of the 5 cents planchet may turn to molten like lava in split of second,when the dies pull away,the molten will solidified also within split of second,thus formed this formation along the rim!
Hi Dickson,
ReplyDeleteWe found a couple of these too but didn't know what're the causes? :)
Dear whycollect,
ReplyDeleteI am still hunting for an answer!
Is thrilling!haha!
Hi Dickson,
ReplyDeleteThe latest specimen that we've found was a 1996 10sen though the extra irregular layer of metal flowing down along the rim is not as evident as your specimen here.
This effect make us feel like making kuih kapit, haha.
Hai dickson,
ReplyDeleteI have few specimen as yours but couldn't get the answer or clue...
Dear my-way,
ReplyDeleteMost welcome and thank you to visit my Blog!
I also collected a few pieces of similar errors.
It may be caused by the over pressure of striking.This errors are most found on small denominations,especially 5 cents coin.
50 ton per square inch of pressure was used to strike 5 cent coin,after long hours of striking process,the tonnages may various,greater tonnages of striking may happen.Great tonnages will lead to high heat,the surface of the 5 cents planchet may turn to molten like lava in split of second,when the dies pull away,the molten will solidified also within split of second,thus formed this formation along the rim!