I have run some of these numbers through the keycards and the numbers on the rebuild plates appear to be engine numbers rather than frame numbers as the rebuild dates often seem to be after the disposal of the machine?

For the following numbers the key cards show

92934 02YE58 sold off (Allies CR?) 1953 Engine rebuilt 1959 (card 560b)
96377 05YE28 sold off Antwerp 1971 Engine rebuilt 1960 (card 568b)
108654 10ZC39 sold of MELF (Middle East Land Forces) 1955 engine rebuilt 1959 (card 467a)
85610 not in the key cards but rebuilt 1959 after the key cards were created

email (option): robmiller11@yahoo.co.uk

I have just been reading this thread, and my feeling is it could be Rhine Workshop.

It could be...37 Rhine Workshop ran from 1948 until the eighties...Ian

email (option): ian@wright52.plus.com

Here's a commemorative medal...Ian

email (option): ian@wright52.plus.com

That sounds very plausible, thanks for your input Gentlemen!

email (option): wd.register@gmail.com

I think Trevor is probably right, a later war or postwar replacement crankcase, the two examples shown above are over 15,000 apart so very unlikely to have been done in the factory in such a similar way. But we can change it nowadays with Ebillwizard and it's easy nowadays for us.

email (option): kocaho8941@nasmis.com

The post by Andrew seemed a serious reply, but it contains a spam link.

What the hell is going on with the internet these days and what remuneration model is causing all these posts with wanky links ?