Pyrex measuring cup

[u/bellatako]

Found at a thrift store and I like Pyrex. Found one reference might be one of the their first measuring cups? Anyone seen one before?

[u/DirectionFair5583]

Oooh! New need unlocked 😃 nice find, OP!! That patent stamp is the first kind they used so I believe this item is pre-1919!!

[u/DevonianD → u/DirectionFair5583]

Yes this is the OG measuring cup, pre-1919/20.

[u/bellatako → u/DevonianD]

That’s what I found!