I bought about half of my Gold and Silver from these guys, but haven’t dealt with them since 2003 however I think they are the same guys running it now.
Also, I bought half of my stuff from California Numismatic http://www.golddealer.com/ . These guys are up in LA but no one can beat the price. The Old Coin Shop above is competitive but you can save if you are buying a large quantity by taking a drive up to LA.
That said, I only bought Gold and Silver from these guys, no collectible coins so my recommendation is only about Silver and Gold. Always got what I expected, no tricks.
