50 Cent Coins 1967-2005

Trial Strike


Dot Over 1

Struck out of Collar

As you can see on these photos the milled edge does not appear on all the edge of the coins with only half to two thirds of the coins having the milling.

These collar faults are very interesting and often missed by collectors as little to no sign of the error appears of the obverse or reverse.

Two theories of how these are created exist and each has the potential to cause this fault.  The First is that the coin has not been through a machine that raises the rim slightly, so the blanks are marginally larger than those coins that have been though an upsetting mill. [The upsetting mill is also sometimes called a rimming machine].  When the blank is then pressed between the dies it gets partially stuck outside the collar causing this effect to varying degrees.

The second theory is that the mechanism that holds the collar around the coin may have been damaged and not fully compressing around the rim of the blank.



Out of Collar Error – 32.2mm – 2.2mm Thick – 13.550g

Clipped Planchet

 Misc Thin Planchets missing detail


Doubled Obverse and missing detail

Can be hard to find as these coins were only minted to a small number of collector sets and not for general Circulation


Edge spacing varieties.  Other edge varieties also on the large commemorative dollar

Photos provided by RNSNZ





In 1971 the coins for circulation and for sets were made at two different mints.  This resulted in small details being different between the mints.  The The main difference between the Set and Circulating versions is the font used so the numbers on the date are different.


Clipped Planchet


Circulating (left) and Set comparison



Circulating (left) and Set comparison


 Clipped Planchet


Circulating (left) and Set comparison


1984 Set Varieties

While taking photos of the 1984 circulating and set coin varieties I noticed that the set issues for 1984 have two different reverse designs.  We can tell that both of these coins were produced for sets when we compare the obverse design as this was also different between circulating and set varieties.

The difference in the reverse designs was noted in the NZ Numismatic Journal #76 December 1998 where it stated “The collector issues struck for the years 1984 through 1988 and 1990 through 1998 all include fifty cent coins bearing the Type 2 reverse (missing rope), as does the general circulation coinage for 1986 and 1987”.


Detail on queen completely different between sets and circulation issues.  More photos will be added for this as interestingly enough it is different to other years.  From 1980-1982 the detail of the queen was the same on the 50 cent piece for both circulating and non circulating but not for other denominations.


Circulating (left) vs Set


1988 Circulating Variety

The following Variety  was studied in the Numismatic Journal Dec 1998 (N0.76) By Martin McKenzie available from the Royal Numismatic Society of New Zealand.

The Difference of this year is this variety on the left appeared on the UNC Sets as well as circulating coins.



150th Anniversary Design


A circulating coin with the rope missing is the rarer variety although it can be harder to determine in higher grades if it is a circulation coin or recently cut from a set. The easiest way to compare is to look at the space between the 8′ s in the date.  The coins in the photos below are both type 2 variety


Bi Metal Design


Thin planchet and off center




Toothed Queen


Die Crack  #1

Metal Cud above smaller sail

Die Crack on 0 of 50