Hmm That would be neat but being the vin tag is missing, It probably doesnt have much value.
Things I know about it:
It has one early sandcast style gauge and one k1 style gauge. painted headlight. one of the mirrors has the adjustable dome nut behind the glass. Carburettors have a rocker arm with a push pull cable. airbox is the black ribbed type.
From my Wyatt book:
CB750 K0
Frame number CB750 1044826-1044947
Engine number CB750E 1044848-1045147
CB750 K1
Frame number CB750 1053399
Engine number CB750E 104481
CB750K0 "This one, as I have emphasised, was a transition model only. I do not believe any of these bikes went to America. Only 121 were made, and 36 were delivered to the UK. I do not know where the others went."