An interesting auction online coin auction in Canberra this weekend... candgauctions.com.au is selling some coins online. One of their lots is an early U.S. silver dollar collection which includes an 1804 U.S. silver dollar (http://www.candgauctions.com.au/LotDetails.aspx?smode=4&lid=588989). This seems pretty impressive seeing as there are only 15 known according to this source http://www.centraljerseyrarecoins.c...e-an-1804-silver-dollar-how-much-is-it-worth/. Looking at some of their other coins up for auction, I'm not too confident that the silver dollar collection is real as they have two other coins up for sale that they explicitly note are unverified and their authenticity is unknown and they are selling some other coins that are gold plated. Plus, you'd think they'd be going for a bigger venue if the coin was real! On the other hand, who knows, maybe there's a hidden gem in there and they just don't realize it...
Not a scam as far as I know. I've been to their antique and estate auctions before and they were legit. On the other hand, I have found that some of the Canberra estate auction auctioneers play a bit fast and loose with the claims they make about the coins they are selling. I've seen 1/10 oz 24 kt gold HGE coins being sold as if they are actual gold coins and getting prices that were well above spot. Also, gold infused replica bills being sold as if they are something valuable rather than junk that can be bought off ebay for $5.