Antiek.com
The portal site to antique shops, dealers, wholesalers, exporters, auctioneers, shippers, fairs and flea markets in Belgium and Holland.
http://www.antiek.com/

Antiques Online Shop
Sells online quality antiques and collectable items.
http://antiquesonlineshop.com

PCGs
David Lawrence rare coins provides online auctions for over 5,000 rare coins and currency including buffalo nickels, Morgan dollars, silver certificates, and Indian head pennies.
http://www.davidlawrence.com/inventory/searchresults.cfm/category1/1/pn/US-Coins/service/PCGS