I got a 1764A 1/12 Reichsthaler from Prussia in a lot and as these German States coins are (still) out of my field of experience, I need some assistance.
This is the coin:
Diameter: 22,5 mm (should be 24 ... that's 1,5 mm off)
Thickness: 1,1 mm
Weight not known
Ice-test confirms silver
In Numista the only coin for 1764A is KM#298, but the portrait is different, the 12 has a bigger curl and the flowers next to the 12 differ as well (5 petals on my coin and 4 petals on Numista).
There is also KM#311 for the same period, but not for 1764A. The design of the 12 is the same as my coin though. Flower and portrait still different.
In Standard Catalog of World Coins, 1701-1800 I found a third coin, that also has 1764A: KM#297. There is a picture included with flower with 4 petals and a very curly 2.
Online I find different coins from 1764A:
for sale on ebay, looks like KM#297
in the Nederlands a coin with the 5 petals and similar head, but much fatter font and different position of the A-mintmark
on catawiki, very very much like my coin
on numiscorner a coin with the head like KM#298 but with 4-petal flowers
And if I look at other years/mintmarks if these coins I see all kind of different designs for the numbers, flowers, location of mintmark vs. year, font, portrait, ... all within what seems to be the same 3 KM-numbers.
Is all that variety normal within the same year+mintmark for this type of coin? What characteristic is used to distinguish the types? Portraits? And if so, is there any online source to look up this variety? And what about the difference in diameter of my coin (what do yours measure?)? Help! :-)
Hope to find someone with some experience with this period and hopefully be able get information to add KM#297 to the catalogue and add some info to the other two types.
thanks
Bram
