These big, bold, and beautiful old coins were struck to the standard of the 'Konventionstaler', which was pinned as one tenth of one Cologne mark of silver. When the Cologne mark changed, the Konventionstaler changed with it. Until 1822 each thaler was 28.00 grams, and the silver had a purity of 83.3%. Halfway through 1822 this changed, and the thaler was now set at 28.06 grams, with a silver purity of 86.8%. This makes it easy to tell the purity of your coin if it's dated before or after 1822, but coins with exactly this date can be a bit confusing.
The easiest way to tell the difference is by looking at the bust on the obverse of the coin. The later (more pure) coins have a larger bust, with the sleeves of the uniform going almost to the edge of the coin. No inscription could fit there. On the earlier (less pure) coins the bust is slimmer and smaller. An inscription could fit between the back sleeve and the edge.
1807 TO 1822 (SMALL BUST)
worn: $60 US dollars approximate catalog value
average circulated: $125
well preserved: $275
fully uncirculated: $600 and up
1822 TO 1825 (LARGE BUST)
worn: $85
average circulaged: $200
well preserved: $475
fully uncirculated: $1000 and up
coins with a large bust dated 1823 are less common - multiply the above values by 2
Coins with holes, scratches or other severe damage will be worth much less. Coins fitted in a jewelry bezel (like requester Dom's coin) retain the full value as long as they have not been damaged in the process, and have never been polished. Cleaning ruins value!
The values cited on this page are catalog values - please see our Important Terminology page for how to convert into actual buy- and sell values.
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