I was walking through the woods on my place today and I found this bottle laying in the woods under a bunch of leaves with some old 9 oz. Sun Drop soda bottles. I have no idea what it once held. It is peculiar in that at the top shoulder and bottom the glass is molded with angular indentions. The top is coarse threaded for a screw on cap. On the bottom of the bottle is the marking 26. That is the only writing on the bottle. There is not anything telling the volume in ounces.....nothing. It could be old or relatively new but it has to be older than 5 years. I tried to clean the bottle up but I can't get the inside clean without a brush which I do not have at the moment. Anybody want to take a stab at it? My first thought wass that it was some kind of beer bottle but it is clear and most beer bottles have a tint to them.