REDUCED: I don't see any mark on this but it is in very good condition for the age, around 1920s I think, and it's quite large. There are some tiny scratches and tiny pitted marks here and there and each shoulder has a dent! If it is silver plate then it has held up really well. It has good weight and the body is bulbous, perhaps hold a half pint? Although I've had a lot of these things for years I am sure I purchased the flasks in Scotland - they are popular there! 5 3/4 x 3 3/4 inches and the thickness about 1 1/2 inches. Many of these were pewter but I don't think this one is.