For your consideration a Gibson GA-5 "Les Paul Jr" 1955.   When the student guitar of the same name was introduced, Gibson needed an amp for co-marketing.  Gibson GA-5 "Les Paul Jr" 1955 was born. This amplifier differs by a single resistor at the imput jack from a Fender Champ of the period,   Whatever a period champ can do so can the GA-5.  
 
The amp is cosmetically original but has had filter and other electrolytic cap and resistor replacements.   For a 70 year old amp , this should be seen as standard and expect maintenance to keep this gem  tuned and operational.  A grounded three pronge plug has been wired.  The  speaker and transformers are original.  If you own a vintage Les Paul Jr, it should be coupled to its amp name sake.  This amp is fully functional and fun to mic up.