I'm not a coin collector (I buy original vintage photographs and rare paper items) but this auction is well worth taking an interest in:
http://coins.ha.com/common/auction/c...1161-tem091511
Heritage Auctions are getting fantastic prices for the top tier coins just now - on the back of high commodity prices, their September auction in Long Beach, CA raised €34m in sales with some of the rarer coins going for high six figure sums.
Their forthcoming auction, detailed above, has some great items too and presents a good opportunity to view some high-end coins / high-end investment part of the market.