The Pye amplifiers date from the early 1950s and feature triode connected KT66 output valves giving a 12 watts power rating . The PF91 is very rare nowadays and ihe HF12 even more so. Both are top-end vintage amps,offering better performance than the revered Leak 12.1 IMHO.
The RGD 1046 Is an amplifier chassis removed from a 'high-end' radiogram of the late 1940s / early 1950s. It features PX4 triode output valves. Useable output, I guess is not more than around 7 or 8 watts. Very euphonic sound through sensitive speakers but not really true hi-fi.
I would expect the HF12 to achieve the highest price of the three.