The Ampeg Gemini II is a highly regarded, versatile amp.  The amp has original transformers, handle, and 15" Jensen Concert speaker. The multi-cap can has been replaced as the original was out of spec (not shown in photo).  Remarkably, it still has the original cover (although it does have a hole in it on one side).

This amp captures phenomenal tones that are bright, crisp and articulate. A wonderful amp catering sounds more classic rock tones or jazz. Very big and open sounds coming from this and the tremolo function only adds to it. Nothing beats an analog vibrato feature, and the Gemini II even has a square wave selection feature on the depth pot. Even when pushed to the max it has wonderful clarity and richness without being too saturated like you find with a lot of amps.

This amp is designed to run at US voltage and so you will require a step-down transformer to operate with UK voltages.