in the early 70's , we [i] joined a club [club america i think] which bought a 720 to fly club members here & there. we went to cosumel in it once. i participated in a certification test of evacuation. i remember we didn't meet the time, mainly because a slide ripped apart , the plane wasn't full, & so was certified for less than the # of seats it had. also, they trained a cockpit crew which quit after the training. anyway, somewhere is a stock certificate suitable for framing. just glad we got back!