This is an old pressure gauge from a vintage race car, on a keychain. These old racing cars used to have hand-made dials and gauges that can be seen as artwork in its own right. Automotive art you can call it. This specific pressure gauge is from a vintage race car. It has some rust at the edges which gives it even more character. Classic cars have instruments that have much more character than you will find on modern cars. Long live the analogue gauge / dial / metre!