Auction

• Ivy and Mader Philatelic Auction
  One of the top auction houses in this field. They include auction features and many times there full catalogue on line.
• Sotheby's
  For over 250 years, Sotheby's has been going about the business of offering art, in all its splendid forms, at auction. No matter what your passion -- photography or folk art, Swiss watches or French wine, furniture or paintings, books or baseball cards -- you can indulge it at Sotheby's.