Goldanalytix GoldScreenBox Instruction Manual page 19

In the following table you can see the dimensions and the measured values obtained by us of
the most common 1/10 ounce coins.
Name
Lunar II (from 2008)
Panda
Britannia (from 2013)
Buffalo
Kangaroo
Libertad
Lunar I (until 2007)
Philharmonic
Maple Leaf
Krugerrrand
American Eagle
Britannia (until 2012)
It can already be seen from the table, that there are some exceptions: Since the Chinese Panda has
a diameter of even more than 17.3 mm, the standard conductance of pure gold is reached with
this coin (almost 45 MS/m) - so you can measure this coin in the usual "Au 999" mode. Basically,
coins from 16 to 16.9 mm should be measured in the mode "1/10 Au 999" on page 2 and coins
with diameters of more than 17 mm can usually be measured in the mode "Au 999" (with
corresponding limiting cases - a coin with 16.9 mm may well already be in the range of "Au 999",
the transition between the two measuring modes "Au999" and "1/10Au999" is fluent).
2.) 1/10 Au 916 (A)
For coins with a composition of 916 parts gold + 84 parts copper, with the well known Krugerrand
as an example, the situation is similar to Au999, but with the difference that the values are even
closer to the reference value of the material. The reason is very simple: By adding copper to the
pure gold (this is done for reasons of durability and scratch resistance) the 1/10th ounce has the
same fineness in gold, but is of course a bit heavier overall and therefore usually a bit wider. In
addition, the conductance is significantly lower (9.7 vs. 45.0 MS/m), so that in this case the
percentage deviation in absolute figures is less noticeable.
In order to illustrate the similarities and differences of the 1 ounce and 1/10 ounce Krugerrand
coin please have a look on the following table:
Name & Size
Krugerrand 1 Oz
Krugerrand 1/10 Oz
Fineness
Diameter
[‰]
999 17.1 mm
999 17.39 mm
999 16.5 mm
999 16.5 mm
999 16.5 mm
999 16 mm
999 16.1 mm
999.9 16 mm
999.9 16.1 mm
916 16.55 mm
916 16.5 mm
916 -
Fineness
[‰]
916
916
Thickness Weight
1 mm 3.11 g
1.05 mm 3.11 g
1.17 mm 3.11 g
1.19 mm 3.11 g
1.5 mm 3.11 g
1 mm 3.11 g
1.5 mm 3.11 g
1.2 mm 3.11 g
1.13 mm 3.11 g
1.25 mm 3.39 g
1.19 mm 3.393 g
- 3.392 g
Gold content Diameter
31.10 g 32.8 mm
3.121 g 16.55 mm
Conductance Measuring
[MS/m] mode
43.5 Au 999
44.8 Au 999
41.2 1/10 Au 999
41 1/10 Au 999
41 1/10 Au 999
40.9 1/10 Au 999
40.5 1/10 Au 999
40.2 1/10 Au 999
41 1/10 Au 999
9.5 1/10 Au 916 A
10.9 1/10 Au 916 B
11.8 1/10 Au 916 C
Thickness
2 mm
1.25 mm
17