C. 1910 American collapsing cup in brass with either silver or nickel plating. Very good condition with only a couple of shallow depressions in the top, and rubbed high spot areas where the brass shows through. The bottom has an "R" inside a Pennsylvania "keystone" in the recessed center surrounded by the words "made in USA patent 2387". Great piece for a collector. Measures .8" high x 2.5"diameter when closed, and 3.25" high when open.