Wonderful original vintage find; Henri Selmer Model 20 (very rare) Trumpet.  The is serial number 15xxx with a likely 1955 manufacture date.  It is in excellent condition having been refreshed in all ways by a local brass expert from Shires.  It is obviously missing a but of the original lacquer as someone loved it well and was a bid handsy with it.  it is ready to play, and of course, good luck finding another model 20.  Most people barely know they exist.