🔎 UNIDENTIFIED Strange Pyrex Item

[mojjax]

 

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[GoldieLocks]

Maybe it is part of an old breast pump?

 

[LandSeig]

Old transistor?

 

[Red-Coat]

Looks to me like a vacuum tube from a vintage piece of radio or audio equipment.

Any serial numbers on it, or other names beyond the Pyrex branding?

 

[mojjax]

Looks to me like a vacuum tube from a vintage piece of radio or audio equipment.

Any serial numbers on it, or other names beyond the Pyrex branding?

just the pyrex part

 

[crashbandicoot]

Some kind of self heating vacuum flask maybe?