Malaysia Finned Rim Error Proof Coin.


Finned Rim Errors.Obverse.
(Dickson Niew Collection)

The proper term for this type of raised-extra-metal-around-the-rim error is a Finned Rim Error Coin. The cause of this error is usually one of this two things. Either the planchet is too heavy for the normal die spacing, or the dies are improperly spaced and coming too close together during the strike. This causes excess metal to squeeze up between the dies, resulting in the extra bit of raised metal around the rim.It would seem likely that the latter problem is what accounts for the finned rim error here.

Earlier,this Proof coin was mistakenly called the Misaligned die (MAD) struck error coin.MAD is occurs when the top and bottom dies are not in alignment with each other. The results are one side of the coin design is offset while the reverse appears normal.

Finned Rim Errors.Reverse.
(Dickson Niew Collection)

This is a 1984,"25TH ANNIVERSARY OF BANK NEGARA MALAYSIA" COMMEMORATIVE PROOF COIN. A RM25.00,.500 Silver,Weight:35.000gm, Diameter:42.00mm, Thickness:3.22mm and with a total Mintage of 10,000 pieces,minted by Singapore Mint.

Obverse is the effigy of Malaysia Agong, KDYMM SPB SULTAN HAJI AHMAD SHAH AL-MUSTA'IN BILLAH.

Finned Rim Errors.
(Dickson Niew Collection)

Finned Rim Errors occurred around the rim.It exhibited sharp-edge raised rim with a 2.00mm of highest raised rim at 12.00 o'clock position.

It is pretty rare to find one on a Proof coin since they're so carefully struck.I am willing to pay RM 380.00 to own one.


  1. Hello Dickson,
    Looking at your coin, I really don't see any issue of MAD except for the slightly 'finned' wire edge as stated by you. MAD refers to the centeredness of the striking on the planchet and in relation to the opposite side of the coin and the irregularities of the edge is another separate issue altogether.

    For the edge, "finned edge error" or "struck with collar too high" can be appropriately used to describe their oddities.

  2. Hi Dickson and Nu,
    We noticed the proof coin also has high rim.
    Cheers :)

  3. Dear Nuchatter,Thank you very much for your very good comments to allow me to learn from you another new things.Hope with your continuous guidance,my Blog will be getting better in future.Sincerely thank you in advance!

  4. Dear whycollect,Thank you for your comments.Welcome you to post your proof coins for our refference!

  5. Hi Dickson,
    Yes, will do so at your request.
    Please refer to our blog for the pictures.
    But we apologise for the low quality pictures.
    Haha, thats the best we could do with our cheap point to shoot camera.
    Phew, proof coins are always difficult to shoot.
    Thanks a lot, Dickson :)

  6. Dear nuchatter,Thank you very much for your good comments.Again,I learnt something new from you.I sincerely hope with your continuous guidance,my Blog will be getting better and better!Thank you again in advance!

  7. Dear whycollect,I am sure there are more of this Proof coin with Finned Rim Errors out there since there were being produced in the same batch.Good luck!!
    Happy week end!