A special Edition of Music Man's smallest model, built around 1981-82.  Favorite of Eric Clapton, Chet Atkins, Jerry Reed & more.  

Quoted from https://www.premierguitar.com/:

The 112RD-50 model name of your amp indicates that it has a single 12" speaker, a reverb/distortion chassis, and 50 watts of output power. It features the hybrid-tube chassis with a single 7025 preamp tube and two 6L6 power tubes, two channels (each with independent volume, tone, and bass controls), and gain and reverb controls on channel 2. Channel 1 also has a bright switch, while channel 2 boasts a limiter switch.

Music Man amps were highly regarded when they were released and they continue to be a popular, yet cost-effective choice for vintage guitar amplifiers.

This amp is a VERY RARE blonde edition 50-watt RD-112, different from its regular basic black model. 
This model contains the upgraded Electro-Voice speaker and advanced circuitry that switches channels with the front switch, as well as with the switch pedal (not included).

Meticulously maintained and kept in dust-free and caring environment. Sorry to see it go, but it's my back-up RD112 and my first one has proven faultless.