87. Malaysia 20 Sen 1977 Rim-To-Rim Die Crack Error

image 1: obverse and reverse of the coin

  
    This is a major rim-to-rim die crack error coin, or can I use term multi rim-to-rim die crack error coin to this specimen? Interestingly the crack lines separate the reverse of the coin almost at the same area.

   For any mechanical engineering students out there, perhaps you are aware that failures are mostly happen at the area which has the stress concentration factors on it. So in attempt to analyse this specimen with my little knowledge, the crack initiation of the die might start along the tail of number "2", because it is located near the center of the  coin, which experienced the highest stress and pressure during striking stage. The crack grew along the tail to the rim at 8 o'clock and for some reason it splits into two crack lines, most probably to distribute the pressure and also to facilitate the other crack line that passed through the alphabet "Y" at 1 o'clock of the reverse.

  

77. Malaysia 20 Sen 1992 Error Coin - Die Break and Doubled Die / Mechanical Doubling

A die chip and MDD! Worthless piece of error coin but still worthy to reside in my album.

76. Malaysia 10 Sen Error Coin Thin Planchet

image 1: obverse and reverse of coin 1

image 2: obverse and reverse of coin 2

     Currently don't have any idea what had caused these coins to be like this. Among the characteristics that can be seen on these two coins are, thinner planchet (thickness of the coin), granular surface on both obverse and reverse, plain edge and slightly smaller in diameter.

   Could it be a slag inclusion planchet (I-A-1)case? or perhaps improper alloy mix planchet (1-A-2)? Rolled thin planchet (I-B-2)? Any comments are welcome.

reference: http://www.numismaster.com/ta/numis/Article.jsp?ad=article&ArticleId=9804


  

75. Malaysia 50 Sen 1984 Third Collar Die Omitted

image 1: the coin

      My friend just found this coin in his loose change. Currently do not know what had caused this error but I am pretty sure that this is not a post mint defect (PMD) coin.

      Currently, some collectors think that this is a Multiple Struck Coin.

I wondered this is a Multiple Struck Coin.This coin received many times of strikes on the (almost)same spot when it was stuck in the mint press and could't be ejected.The continuous striking caused higher rim to be formed,and caused the lettered edge to deformed.The impact on multiple struck on the same spot may caused high temperature and and resulted the coin, especially smaller denominations to become darker in colour. You may find that the center of the coin is thinner,due to the impact of continuous struck,the metal was pushed to the edge,hence,form a higher rim. (Dickson Niew)

     And it could be a coin which was not struck by the third collar die. (Nu Coins and Notes)

74. Malaysia 10 Sen 2007 Error Coin Capped Die, Brockage Error & Die Crack UNC

image 1: obverse and reverse of the coin

This is my 3-in-1 error Malaysia coin. Capped die, brockage error and die crack in uncirculated condition.


1. Capped die

A capped die is caused when a struck coin sticks to the upper hammer die. Once the coin is stuck to the die face, the reverse of the struck coin becomes the new die face. When the next blank is fed into the collar and the strike occurs, the reverse design of the adhered struck coin impresses itself into the new blank. This struck coin is a brockage strike. The coin adhered to the upper die is known as a die cap. This process repeats itself as more coins are struck by the cap. The greater the number of strikes, the higher the cap metal will be pushed around the upper die shaft. Eventually, the cap brakes away from the die in the shape of a thimble. coinfacts.com

2. Brockage

 brockage error can only occur when there are two coins involved. One of the coins involved will always be a struck coin which has not ejected properly. That struck coin will find its way back between the dies and will be struck next to a blank planchet which was fed into the collar. The image of that first struck coin will be impressed into that side of the blank planchet. The result will be a second coin which has images of the first coin impressed into it. Those images will be pressed into the coin and the image will be in reverse. This incuse sunken image is known as a brockage. coinfacts.com

3. Die Crack

A die crack is a mark appearing on a coin, usually in the form of a fine raised line or small blob. This happens because the coin die which struck the coin had a crack or small break in it that got transferred to the planchet during striking. coins.about.com

72. Malaysia 10 sen 2006 Error Major Die Break

image 1: reverse and obverse of the coin

    Just bought this coin because I thought this was lamination error. But then after I recheck it back, it seems that the error is more close to a large cud. What's the term for extra large cud? Please somebody help me.

   Okay I was wrong. This is far from lamination error, and the term to call it is large cud, due to major die break. Cheers!

62. Malaya and British Borneo 20 Cents 1961H Error - Clipped Planchet

image 1: the reverse and obverse of the coin

    

image 2: side view of the clipped part of the coin

Origin: Malaya and British Borneo

Date: 1961

Denomination: 20 Cents

Error Type: Clipped Planchet at 1 o'clock on reverse

        Just discovered this lovely error coin inside my friend's album. Eventhough his collection is small, but I am quite amazed to see a 1 Dollar of Straits Settlements 1907H in his possesion. And luckily I recheck his collection again, and to my suprise I found this clipped planchet error coin. I think this is quite scarce, because I haven't seen yet any clipped planchet error coins being offered for sale online and by dealers.

34. The Crying 50 Cent

50, are you crying?

close up, see the tears?

     This is an example of nice specimen of coin of Malaysia. Some people would like to call it "extra metal" because obviously there is extra metal on the coin. But more accurately, this specimen could be better called as "die chip error coin".

    Die chip error happen when the die itself, of which is the negative image of the coin, chipped off from the die, due to rustiness or worn. Then this will lead to creation of void space of the die. Later during the striking phase of the coin, coinage metal flows into the void space creating a small raised lump on the coin. Ting Ting, have you heard of Malaysia 50 Sen Extra Dot? Specimen here have 2 big lumps which can be seen by naked eyes. 

    This phenomenon is a mechanical error, but not a die variety. But still, its a nice specimen to possess of. I'm letting this specimen go for a better love and appreciation to a collector friend. Hope you like your new owner, mate!

    

    I wonder how many pieces of coins were minted from this chipped die. Do you own one of these kinds?

    

17. Malaysia 20 Cents Error Blank Planchet

photo: Malaysia 20 cent blank planchet

   I bought this piece of error coin two years ago with price of RM10 from a McDonalds franchise manager. He told me that he got a lot of foreign coins in their McDonalds donation box and this coin was one of them. Even he found a Half Cent of Queen Victoria inside the donation box. I wonder if Singaporeans really had foreign coins inside their wallet. Usually they will take only banknotes for donations purpose and the coins will be used for their changes. That is quite not honest. Then, he as the manager will filter the coins by taking out foreign coins.

    The dimension and weight of this coin match the dimension and weight of Malaysia 20 cent. If this error coin is genuine, this is categorized under the blank coin type. There are many types of error coins, such as double strike, wrong planchet, off centering, low strike, off strike, mirror strike and others. From my survey at the Internet, blank coin error coins are the easiest to find compare to other types.

   There are two types of blank coins. The first type is without raised rim on it. In this case, the coin is better called as blank coin, as it never involved in any of the coin minting processes. For the second part is with raised rim on it,blank planchet. A planchet is a blank coin that is ready to be stamped by an engraved die. I think my coin here has raised rim on it. The raised rim on the blank planchet means that the coin has undergone at least one process of coin minting, which is softening process. I think softening process soften the surface of the coins to ease the stamping process later.There is probability the blank planchet escape the pressing section and then bagged for circulation.

   Counterfeiting exist easily because blank coins are easy to copy and produce. There are few tips on how to differentiate between a genuine and a fake one. First, if the blank coins has milled/reeded edge, most probably it is fake, because milling of the edge and stamping usually occur simultaneously for conventional minting. By the way, one of the objectives of reeded edge is to avoid counterfeiting. Second one, usually blank planchet has smooth and shining surfaces. If the surface is rough, maybe someone had sanded and polished the surface of the coin.

  What do you think of my coin here?