mystery amp

[roughcut studios]

I would like some help identifying this amp. It was brought in by a local lap steel player for a basic service and updating to a grounded power cord. There was a small paper label on the main chassis with the model number "50 W RT". My guess would be 50 watts with reverb and tremolo. Tubes are: 12ax7 x 5, 6u10, 5u4, and 6l6 x 2. This amp looks to be very carefully hand built, all point to point between sockets and terminal strips, with a very neat layout.
One of you out there must have seen one of these before, or may be familiar with this maker. Any info would be greatly appreciated.
Thanks, ...Jon

[Steve Conner]

It's a Sano. Somebody has changed the badge on it.

"SANO" Guitar (Accordian?) Tube Amplifier - Gearslutz.com

[roughcut studios]

Thanks to Steve's lead, I found the answer to my question.
JG is Julio Giulietti, and this is an accordion amp, with a special stereo accordion input. Made by Sano, model 50WRT.
I also found the schematic at the Duncan amps site.