Harmony Portable Guitar AmplifIer Model 4050A Vintage Amp battery w power supply

Description

Vintage Harmony 4050A Portable Guitar AmplifIer.  Runs off of 6 C cell batteries or included non-original 12v power supply. Works great, loud for it's size when turned all the way up.  Bright channel gets some breakup, normal stays clean.  Headphone jack has end chipped off but works as it should, nothing loose internally.  Tested off of external power supply as I don't have enough batteries handy but battery connections are clean and in good shape   no reason to think it wouldn't run on battery power.
See photos.