Cambridge # 880/881 Bridge Set. Five piece Bridge Set. Center handle black glass bridge tray (#880) with stippled card motifs of spade, heart, club and diamond are pressed into the glass. The tumblers are line #881. Tray is about 8†square by 8†high. Glass holders are 2†diameter. Both the tray and tumblers where sold as set. The tray may be found with different tumblers. Trays with different tumblers have a different line number.