The model 351 is the same as a 251, it is simply repackaged in the “Decorator Style” cabinet you see here.

Amplifier Type	2 Channel Vacuum Tube
Output Power	55 Watts total
Drum	1 - 15" Speaker
Horn	1 - Compression Driver
Speeds	2 Speed (Chorale/Tremolo)
Interface	6 Pin 2 Channel