D series made in England !

There was an English CK look alike on this forum a while back. While it used the GE flat plate condenser, the rest of it (compressor & evaporator) was BTH (British Thomson Houston). The cabinet had a Canadian model number.
British AC mains supply at the time was typically 200 to 250V, depending on the district, and standardised on 240V since the late 60's.
As for this DR lookalike, it would be interesting to know if the compressor is a U.S. 110V import, or British made for 200-250V. I would guess at the time with the design in its infancy they'd use the 110V GE compressor and provide a transformer, as was done with Australian imports.

I'd suggest looking up the refrigeration episode of "Secret Life of Machines" on youtube. This is a UK produced series and a DR appears a couple of times in that episode.

It looks to me that the evaporator is a stainless one similar to the ones the CAs used...I could be wrong though. I also wonder why they used a different control?

I think you are right. I think that is a CK style evaporator. I do know that some of the very last DRs and this would be one of them, had that style of evaporator. I can't quite tell if the dimensions of the control are the same or not but I do know that they never had the little red overload flag that the later models had.

I think it's a completely different evaporator.

The Canadian AKs (for example) used a shiny stainless Ft. Wayne lookalike evaporator with two headers and a connecting tube, instead of the US CK evap.  

Then there was a recent thread about a BTH brochure:
monitortop.freeforums.net/post/15932/thread

In the linked folder, pdf "h" shows BTH's "Franken-CK", with a U-shaped evaporator, and the compressor mounted _below_ the motor. It's almost as if they went out of their way to use a similar-but-different design.

I wouldn't be surprised if the evaporator on that quasi-DR is similar to the one in the BTH brochure.  It looks fairly shorter than a CK evap as well.  Who knows what surprises lurk inside that dome

(actually, it seems to me that GE had a degree of excessive (but well-deserved) pride in the DR oscillating cylinder design, so I suspect it has standard DR guts in the dome.  but who knows)

This is gold Birkie, GOLD!

Wow, no wonder the old Tecumseh compressors are so quiet. I wonder if the old pancake compressors are that way?

The pancake compressors are the ones I'm referring to.  The round and oval ones use(d) a more traditional piston, connecting rod, crankshaft arrangement.  But that's too big to fit in the pancake housing.