Hmm, my guess is it's an Orange Crush flavour bottle, used when the local Orange Crush franchise wanted to bottle their own flavours of soda. Doesn't look like a typical flavour bottle though, so I guess there's a possibility that it's some sort of Orange Crush knockoff brand. That would be pretty cool if it is, I imagine that they'd quickly have been sued into oblivion if they actually tried to market something called O Crush.
Your bottle is a 7oz. embossed O.C., most coming from North Carolina. Usually Orange Crush is embossed around the base.... I think yours is - dated about 1924-1928....
Michael