Bowers and Merena Galleries 
Rare coin dealer and auction house, providing rare coins to collectors, dealers, and museums across the world.
http://www.bowersandmerena.com/Rauch Auctions
H. D. Rauch GmbH, Vienna, Austria. Auctions and online shop. Coins, stamps, decorations, and medals.
http://www.hdrauch.com/
Gatewest Coin Ltd.
Canadian firm specializing in Canadian Mint and Proof sets.
http://www.gatewestcoin.com/
Ponterio and Associates, Inc.
Auction house specializing in ancient and world coins. Current auctions, schedules, and staff introductions.
http://www.ponterio.com/
Stack's Rare Coins
Conducts major rare coin auctions and handles many major rare coins through their online listings and their retail shop.
http://www.stacks.com/
UOPT Auctions
From collectors to collectors. Offering mostly Russian and German coins, antiques and militaria.
http://www.uopt.com/
NumisMedia Online Auctions
Featured US coins include Mercury Dimes, Buffalo Nickels, and Indian-head Cents.
http://www.numismedia.com/auctions.shtml
American Numismatic Rarities
Offers information about current auctions as well as current news items and a want list area.
http://www.americancoinrarities.com/
Goldberg Coins and Collectibles Auctions
Auctions of coins, currency, collectibles, rare gold silver commemorative ancient coins.
http://www.goldbergcoins.com/
Coin Auction
Online auction of world coins with scans.
http://www.mynthandeln.com/english/auktionen/index.htm
Canadian Coinoisseur
Conducting simultaneous live and online numismatic auctions of condition-rare Canadian coins and other numismatic rarities.
http://www.coinoisseur.com/CurrentAuctions.html
e-Costa
Internet coin and stamp auction site. Offers a new auction every fortnight. Site in English and Dutch.
http://www.ecosta.com/
Weaver Coin Auction
Central US live coin auctions. Includes complete listing with images. Auctions scheduled every three weeks. Phone and email bids accepted.
http://www.weavercoinauction.com/
Dix Noonan Webb
Auctioneer of rare coins and medals.
http://www.dnw.co.uk/
BidCoin.com
A community of coin collectors, featuring auctions.
http://www.bidcoin.com/
Superior Galleries
Selling and buying rare coins and fine art, specializing in Art Deco and Art Nouveau.
http://www.sgbh.com
Sell, Buy, Enjoy
Specialized in coins and papermoney and books.
http://www.sbe.ee
