This is a beautiful 4 stamp sheet, issued by Guinea-Bissau in 2012, featuring Chess Champions Boris Abramovich Gelfand, Viswanathan Anand, Ruslan Ponomariov, and Rustam Kasimdzhanov. The sheet is Michel catalog #6082-5, and is Post Office fresh, mint never hinged, and F/VF. Click here to visit my eBay Store for other auctions and Direct Sale items: