During the 1930 Open Championship at Hoylake, Bobby Jones found himself in greenside bunker at the Par 5 sixteenth hole needing birdie. Jones pulled out his concave wedge, a club completely foreign to most in attendance. Rather than simply pitch out and try to save par, Jones took his concave wedge and aimed right at the flagstick - and knocked it stiff. The ball reportedly lipped out and nestled inches from the cup for a tap-in birdie. Use of this revolutionary wedge would soon end, however, as the USGA banned the club on January 7, 1931 at its annual meeting held in New York (the R&A later followed suit). 

This is a photograph of Jones during that exact bunker shot at the 1930 Open Championship. This was reportedly the only shot that Jones hit with his concave wedge during any Major Championship in 1930. 20" x 16" and matted to 20" x 24".