The mark looks like '33 or maybe '43, there was crossover period. To me it looks like a modern incarnation of Blum's though. I'd go by the mark and not me.
what a great bottle ! I love glass ginger beers . the bottle may have been made in 1943 , but most ginger beers I have were made in the 1930s . its a toss up. anyway it is a cool , cool bottle.