Need help with Prototipo dating

[70SATMan]

I've got two early Protos. I know which one is older of the two but, I'm trying to date both of them. The goal is to keep the one closest in age to my1970 and sell the other. The earliest I've seen with the month/year stamp is 78 if I recall correctly. Anyone know the timeline for the different types of MOMO marking?

Here are some pics.

[70SATMan]

Older of the two wheels

[hgo]

Sorry i can not help you with the date but i'm interested in the selling part

A guy I know has a 71 car which has a prototipo with prototipo at the bottom of the spoke and he told me it was a early 70's one

[hgo]

I found a sales brochure of an Alpine Renault A110 1600S from 1971.
The car in the brochure has what looks like an Prototipo.
The word is indeed written at the bottom of the spoke.

Hope this helps

I also found an old Momo advertisement (in a 76 mag)with picture of their wheels and there is only one also with a word (can read the word for sure because of the small print)written at the bottom of the spoke, so i think that must be your early one

[70SATMan]

Thank you for the data points. I'm in the process of doing the same thing. Going through my early Road & Tracks.