Pyrex has a timeworn reputation for manufacturing bulldog strength glass, tempered to withstand the rigors of heat and cold. In the 1960s they offered many types of industrial glass.
Here is one such piece; a 7” tall by 3 ¼” diameter lab jar with original stopper. The neck of the bottle is stamped in green ’S 24.’ The bottom has raised verbiage as follows: ‘PYREX REG U S PAT OFF. MADE IN U.S.A. C-3.’ The stopper has the raised verbiage ‘7 PYREX 24.’
This bottle is in very nice vintage condition with no chips, cracks or flaws, other than evidence what this bottle may have held.