Thanks for all the replies! Weyless hubs, never would've known. Unfortunately it would appear that finding a rear QR to match the front will be very difficult and costly. Maybe the same for newer Mafac hood replacements.
At this point preserving the patina is my goal, thanks for the cream polishing suggestion which I'll undertake once fully disassembled. And of course a Brooks or other leather saddle will be mounted. I don't think that black rack will stay put though, even though it's an older (Jim) Blackburn. Seems like it ought to have bright finishes only.
The discovery process is fun and has revealed this interesting decal. I didn't know Mercian employed Pratt & Whitney to supply their engines. I think the elder gentlemen original owner maybe had a career in aviation.
