Round Bottom Flask, 4 Necks, Center B34, Other B24 – MAS 1831

     

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Round Bottom Flask – 4 necks   – MAS 1381  
Center Neck B34  ( 34/35 Joint)
Other 3 side Necks B24  (24/29 Joints)
Borosilicate Glass  3.3,  Heat Resistance 450c