A little while ago I bought a rather sorry-looking 1961 CB72. It was registered in the UK on 1st January 1962 and both engine and frame number are the same. I have the original registration documents which carry a list of all the owners from new.
Work on the bike proceeds when I have time but I will try and make a thread here to let you know what is happening with the bike.
Here is the bike as collected. One of the previous owners has swapped the wheels and front forks for later items. The original fenders have gone and the mufflers pre-date Vince Lupo's project by 40 years or so.

Stripping commences. Notice the extra breather pipes from the top of the head to the rear licence-plate bracket.
Someone had fun in the '60s making this into a cafe racer. both numbers end with '969 so this bike should have an SLS front brake. Rear brake stay is aluminium.

G