My brother -in-law and I are trying to identify this bottle and it's value. The bottom has Ball L-9106 and the number 4. Any help would be appreciated.
Ball is the glass manufacturer (think Ball canning jars)
The bottle was used for ketchup...put a threaded top on it and it looks not unlike the modern Heintz bottles (although maybe they have gone all-plastic by now) . Your bottle is earlier 29th century
The value of the bottle is a dollar or less. They're extremely common