Here's the side// I was think the 49 from the bottom or the 58 there on the right of the center circle .. but almost looks embossed twice ... so many stampings...
It looks like an Armstrong Cork Company bottle - but I'm not sure of the date - kind of blurry double-stamped. Pepsi Cola was a late adopter and did not start using ACL until 1943. That particular style of bottle was patented in 1940