Generally the side seam on a bottle will be in the center of the sides? Is it common for the side seams to not be centered but off to the edge, the opposite side being at the opposite edge?
If by flask you mean the shape, most are flask bottles. Two are square A. Schilling's. I have 12 of the flask shaped and all but one has the off seam and it is a Dent & Butler Druggist Lewiston, Idaho. These were dug from a privy over 20 years ago in Lewiston, Idaho. I don't think they are worth anything or the diggers would have taken them I assume. New to this so learning and I like to ask questions about what ever it is I am learning about. Thanks