An octuple ducat of the city of Gdansk sold for 240,000 euro at Künker spring-auction March 14-18 in Osnabrück, Germany.
About 5,700 lots in four auction catalogs realized a combined 10.7 million euro.
From what was then called the city of Danzig the gold 8 ducats is dated 1644, with title of Vladislaus IV (1632-1648).
It was graded Nearly FDC. Pre-sale estimate was 150,000 euro.
Two gold aurei of the same type showing Caligula on obverse and deified Augustus on reverse exceeded estimates of 60,000 and 15,000 euro, respectively.
When all was said and done, they sold for 95,000 and 75,000 euro, respectively.
The auction firm said aurei in general of outstanding quality have been achieving record prices.
A Vespasian estimated at 7,500 sold for 40,000 euros, while Commodus was 25,000/34,000, Pertinax, 15,000/36,000 and Caracalla 50,000/60,000 euro.
For complete results, visit the firm website at www.kuenker.de.