AUSTRIA. Ducat, 1857-E. Karlsburg Mint. PCGS MS-64 Secure Holder.Fr-233 (listed under Hungary); KM-2263. Frosty, lustrous, a wisp or two away from Gem. Though mentioned as common in the<em> Standard Catalog of World Coins</em> (SCWC), the most recent listing we can find for this date is from 2007 (Gorny & Mosch auction 161, lot 5144).PCGS MS-64 Secure Holder.