Lovely restored clocks.. a real honour to have Peter Horton as a member on here.
It fascinates me that for quite a few Honda models I own, or have owned, there are German variants of the exhausts (mufflers)
Like HMCB750 stamped 'K0' exhausts (instead of HM300's and similarly, for my CB250K0's, there was a specific German part code. It must have been a nightmare for Honda. When I saw the 'restored' Brighton pre-prod. prototype at the DS CB750 event, it had HMCB750 stamped NOS pipes on it .... sadly the down-pipes had blued a bit. There were specific main jet needles too for German market bikes. I sold a set of those needles NOS on eBay only for some 'expert' CB750K0 jerk owner to imply that I had scammed him and no way were they for a 1st model CB750....they definitely were ...but as clearly detailed in the description, they were for the German market bikes.
Also with the CX500 I had, there were two different variants of silencer for the two different power 'PS' bikes.
I must say though, the general standard of used parts I have bought from Germany has generally been 1st class. I have a lovely S90 seat winging it's way from Germany this week ... just don't know if I will be stung for customs charges yet

... fingers crossed.