Saxe-Hildburghausen had quite a sparse coinage, so it's difficult to work out the currency from the coins. The Conventionsthaler first appeared in 1760 but there are a couple of coins from 1759 which I'm inclined to include with the Conventionsthaler, so can we make the existing currency
Thaler (1680-1759)
1 Thaler = 24 Groschen = 576 Heller
and add a new currency
Conventionsthaler (1759-1826)
1 Conventionsthaler = 120 Kreuzer = 144 Kreuzer Landmünze = 576 Pfennige = 1152 Heller
If anyone has further information, it would be welcome.