Thanks all for the kind replies. This is one of the best bottles I have ever been able to get. Hopefully the guy I bought it from will produce other treasures as he has 25 years in doing work in this area.Here is another great bottle from the same bottler. A light cobalt hutchinson soda from the same period. My bottle is presumably a root beer bottle as it is the only one in this size and shape out of many bottle sizes and shapes that he used. Joseph Wolf was known for his root beer.The hutch was for other flavored sodawater.