Dear Sir or Madame,I have a Stamp Collection of about 150,000, including many vintage USA and foreign countries, such as the 1908 2 Cent George Washington worth about $20,000.00 Also, the very rare 1861 Abraham Lincoln black 15 cent!I am looking to sell my 50 year old collection and looking for your advice as a well know member of the Philatelic Society.Thanks for your assistance.Sincerely yours,Jeffrey R. Clark096-717-5621