Welcome to the forum! I think you forgot to post a picture. A square base would be pretty strange for any sort of soda bottle. Definitely not a true Coke bottle, they were only using the standard hobbleskirt design by 1923. If it says Coca Cola Bottling Company then it was used for the other flavours the local franchise sold, not Coke itself.
Sounds familiar, pretty sure it's like Canadian Bottles said, just a flavor bottle made by Coke but did not actually contain coke. I don't think these have much value. LEON.
I agree with the previous 2 posters, it sounds like a 'flavor' (root beer, orange, grape etc.) bottle used by the Bowie Tx Coca Cola bottler. Good to have if you are from the area, not much value otherwise.