This is a beautiful sheet of 4 stamps, issued by Guinea in 2009, honoring famous World No. 1 professional tennis player John McEnroe. Also featured on the stamps are Grand Slam-winning athlete Ivan Lendl, Wimbledon Singles winner Björn Borg, and winner of the US Open tennis game Jimmy Connors. The sheet is Michel catalog #6669-72, and is Post Office fresh, mint never hinged, and F/VF.