All this jar says is Mason. Does anyone know anymore about this? Did Ball make it? Or is it Atlas?
I don't see any other embossing on the jar. The word Mason is super smooth like it's fading away.The Red Book lists jars in alphabetical order. 1648-5 is the numerical reference for that particular jar. #1648-5 only lists the jar as a Bead Seal variation, rather than the Shoulder Seal variation in your pics. I do agree that it is a Ball-made jar. Is there any faint or erased embossing that you can see above the word Mason?