Saving Old Seagulls

I've got a spray booth, guns etc so I get I it mixed at a motor factor, They can match it pretty well, but its best to have a code. It may be the same as used on some motor bikes of the era, as Anzani had a tie with motor bike manufactures, I believe, but I'm more into scooters myself.

I've just swapped a Silver Century for a Johnson 5.5, Yamaha 2.2, Crescent 5 (I think) and an Anzani Super Single. The plan was to get them running and flog them for whatever I could get.
But after cleaning the Anzani and finding its in very good condition and obviously had little use, I'm now going ...

Just got this given, seized solid and no spark. have now got it working OK though.

I think its a MAC, but theres not much information on the net. It has an air cooled 2 stroke motor, which I believe is Italian (Dellorto carb, Ducati ignition). Anybody know for sure?

I also need information on ...