Is there no other embossing?
Additional photos would be helpful, esp. with a plain white background. A clear photo of the base would be useful. A closer shot of the neck/lip would be good too.
This is probably a 50s or 60s bottle and is one of tens of thousands without brand or company embossing. Your only hope is to find someone who recognizes it or to troll ebay. However, you do not have many clues to go by.