Terrific, working metronome from 1962.  Made in Germany.  'Metronome System Maelzel' written on metal label.  Some issues as follows:  It is missing the handle on the winding piece, but, I tried gently with a pair of small pliers, and it winds.  The top crowning wood piece is there, but is unattached, will have to be glued, see pics.  Just sits on top.  Metronome works good, nice and loud,  slider slides easily.  Used vintage condition, sold as is.