"Remember that 'sandcast' was not even a consideration in 1969, rather it was the CB750 super four. I doubt a VIN number had any significance to anyone or any country."
When we were out at the 2009 VMD, Bob Jameson told me he did not know the clutch cover had 9 holes "until you guys came along," in contrast to later covers, not yet in existence, would have 10.
KP is right on with 'sandcast' not being a consideration in 68-69. In 68-69, Honda's primary concern was producing motorcycles in mass quantity, which Honda did not yet know if the units would be commercially successful. Honda knew they would be technologically successful. Honda wanted to place in the retail buying consumer's hands a motorcycle that was trouble free, easy to maintain, looked attractive. Before Honda entered this frontier, four cylinder motorcycles were seen as high maintenance, expensive and not trouble free. Prior to the CB750, the average owner could not just hop on a four cylinder motorcycle and travel long distance without concern.
Restorers look at motorcycles as a collection of parts. Each part to be examined and compared to other parts.. We examine and compare parts for reasons different than someone in the manufacturing industry.