This is a beautiful set consisting of 4 souvenir sheets, issued by Guinea-Bissau in 2001, honoring Scottish biologist and pharmacologist Sir Alexander Fleming. Also featured on the stamps are the Orange Birch Bolete Mushroom, The Weeping Bolete Mushroom, Porcini Mushroom, and the Russula Paludosa Mushroom. The sheets are Post Office fresh, mint never hinged, and F/VF. Click here to visit my eBay Store for other auctions and Direct Sale items: