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, 'Cloche' bell jar with ground glass top and a non-flange base, maker, place and date of manufacture unknown. Bell jar
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, 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