Very Good condition, 7/10, 50W, modified with a master volume on the back that can be removed easily, the back panel was missing so the previous owner made one, looks good, this period is called: LATE 1965 to LATE 1967 (BLUE/BLACK) and features Black control panels, black plastic knobs, blue-on-black patterned grill-cloth (covering the lower half of amp heads).Light blue surface-mounted Selmer logo and sometimes also lyre logo. More info: The T n B 50 was probably the longest-running Selmer amplifier in production, from the early 60 s to the late 70 s, and certainly it sold very well as many are still around and in use today. The Mk II version followed the croc-skin models, and changes were largely cosmetic. Cabinet covering was changed to black vinyl, the front being covered in a very attractive white/blue on black patterned grillcloth similar to designs used by WEM and Vox at that time, with a large light-blue Selmer logo. Handle is leather with Vox-type mounting brackets, and vent grilles are no longer used as ventilation to the back is improved. The chassis was reversed so as to be positioned at the top rather than the bottom of the cab, the control panel being simply inverted 180 degrees to be top-mounted. Normal and Bass channel each have 2 inputs and controls for volume, treble and bass, and an on/off switch and pilot light are provided. On the rear of the chassis are voltage selector, 2 slo-blo fuses and 15 & 7.5 ohm speaker output sockets. Dimensions 21 x 8.1/2 x 8 , valve complement ECC83 (3), EL34 (2), GZ34 (1). At this stage, it would appear that 1 x ECC83 was dropped; previous versions had four.This simple, functional and reliable amplifier occupies sonic territory somewhere between Vox and Marshall and can emulate both, probably the reason for it s popularity. Priced at 55 gns. Oddly, the very attractive livery seems to have been used only on the T n B and not other Selmer models. Our Amp-tech just had a look at this amp and changed the mains and also rebuilt the bias-agg so that the tubes doesn t run too hot.