Hi,
In the book of John Wyatt "Original Honda CB 750" the author wrote page 62 : "Finally, no CB 750 I know of has ever had a matching frame and engine number - so, reader, don't panic if you are trying to work out which bike you have."
I have been recording for 3 years VIN and engine numbers from ad's, web sites, real bikes...
On ebay UK a K0 "ex Wyatt" was for sale with "real matching numbers" below :
US 12/69 1014991 E1015015 Ebay
GB 12/69 1015020 E1015020 Ex J. Wyatt !!
US 12/69 1015196 E1015305 Ebay
So ?