It could be. The schematic for the ace 50 shows this layout
and the mayfair has this sort of layout.
The coils themselves are what threw me off. I have spent almost 3 days now drawing the switch, measuring capacitors, coil resistances and just been going round in circles. I have replaced almost all the capacitors in the coil assembly because they were nowhere near the values written on the capacitors. Rather than follow any schematic, I replaced old for new, based on the markings. I also was measuring continuity with af as well as rf just to try and figure this little bit of fun out.
The other issue this then raises is the if frequency. At the moment, I'd like to just get it going prior to an alignment but I will have to consider what the IF should be. Ace seemed to have a preference for 645Khz and 472Khz. Both are not far enough apart to worry about at this stage and can be measured later but it would be good to find out which I'm meant to hunting for when I do get to power on stages.