Great sounding 1971 Marshall Super Bass, that kept the majority of its original parts. The rear voltage plaque is cracked and mostly missing, due to general wear and tear over the years. The bulgin power socket has been replaced with the more practical IEC style. Internally, one filter cap and one screen grid resistor have been changed. There are two JTM45-era carbon comp resistors used in the circuit. These are likely to be OEM changes, as most modifications done back in the day were performed by the manufacturer. Buyer is free to refer to the pictures and speculate for themselves.