This is an antique made by the Derby Silver Company. Unknown if it is a canteen or a flask. The bottom is stamped Derby Silver Co. 54. The cap has a hinge and in good working condition. The top is stamped with the number 82. The weight of the item is 8.8 oz. It is an antique so there is some wear and tear but the overall intricate floral design is in good condition. See pictures for more detail.