Superman Bottle?

[xfallwithmexo]

Any idea what this symbol is called?
Bottle is 1900s- on
Bottom marked with a 3

https://i104.photobucket.com/albums/m171/karmakrazy45/2012-03-05_09-20-13_472.jpg

 

[epackage]

I believe it's an "S" over an "O" and it has been discussed here before, I forget exactly what it was. Some kind of remedy I believe....Jim