Have a few bottles that my great grandfather gave me 17 years ago before he passed. They have seams all the way up to the neck then end. Two smaller bottles are threaded and the larger one is not. No real markings on them except on the bottom there is a F.
I'm a construction worker and while I had to go in the hottest crawl space in the world I soon started discovering awesome items. I have found 3 bottles, 2 in which I believe are very old and in VERN good condition.
One has no seams at all looks to be blown and says reserved just below the neck...