I have been hunting a long time here in Texas. Digging in a small local dump near where I live, I dug one similar to your's but with out the graduated marks on the side. The other was more honey amber, a tad taller, and was rectangular. Square at the bottom. Both bases were unmarked, both were blown in mold, and both had flared lips. They sold on ebay for $10 for the set. They are pretty cool bottles nonetheless. Is that one blown in mold?