The rubber feet are missing from underneath - again these should be simple enough to replace. Inside, the circuit appears unmolested, though the 9V battery snap has been replaced with a modern moulded plastic one.
Vic Firth American Custom SD1 General Drumsticks SD1, Original Version
Boss SD1 Super overdrive guitar effects pedal
JHS Pro-Rhythm E Drum Sticks
(Video) *Serviced* JHS SD-1 Pro-Rhythm Drum Synth Vintage 1970s Synthesizer Pad
JHS Hornby Descant Recorder
JHS The Blues TB10A Harmonica Key A, Silver