First up a good deal there for someone Nathan!! May it quickly go to another good owner.
Please let me move to this old eligibility chestnut.
Yep Ted the pamphlet above would be %100 legal proof. Below is one of the articles in a folder I did carry to meetings for proof of eligibility *
Of course most people already knew CB750 K series came out in 68/69 and using the stock frame cradle helped. Then again I was the sidecar scrutineer at a lot of meetings we used to attend....
Note the date on the Two Wheels page, find a complete second copy if possible of any magazine or whatever if you can for total security.