AUSTRIA. 4 Ducats, 1828-A. Vienna Mint. Franz II. NGC AU-53. KM-2178; Fr-462. A RARE type seldom encountered in the marketplace. According to the emStandard Catalog of World Coins/em, no mintage figures are known for these issues, but it was most likely struck in limited quantities based on the small number of auction appearances over the last decade or so. The piece shows light to moderate signs or handling with plenty of flashy luster in the protected areas. A neat large size gold coin certain to catch the attention of even advanced collectors.