Bell jar, closed with knob at top and flange bottom. Maker, place and date of manufacture unknown. Object has a strip of unmarked masking tape at shoulder. Bell jar
Bell jar, 'Cloche' bell jar with ground glass top and a non-flange base, maker, place and date of manufacture unknown. Bell jar
Bell jar, Bell jar with ground neck and ground bottom flange. Maker, place of manufacture and date of manufacture unknown. Unclear inscription at base of jar: "11.S.S."? Bell jar with ground neck and bottom flange
bell jar, tall, wide mouth with ground-in glass stopper and welted base Maker, place and date of manufacture unknown. Object has a hand-written inscription "n.S.S. S.?.a.D." at bottom rim. Bell jar