You are bidding on a U.S. 1901 Pan American Expo, #297, 5¢, Ultramarine & Black stamp. It is certified by Professional Stamp Experts (PSE) with Certificate #01435360 and an APS cert from 2020, Disturbed Original Gum, Re-perforated at top. A gorgeous stamp! Compare my price with others available. Don't miss out on your chance to acquire this beauty!  See my other philatelic items for sale. I am an American Philatelic Society and a Civil War Philatelic Society member.  From a smoke free and pet free home.  Bid with confidence as I have over 2190 positive feed-backs and have been on eBay for over 25 years!  I will combine shipping on multiple purchases. Shipping includes tracking. Thanks and Good Luck!