Wow! I have never seen or heard of a Marinoni from this era (1987?) that had fleur-de-lis... only ones I have seen are very early models (75/76)... following that Marinoni used maple leaves into the very early 80s.. Not sure which year that ended but I have an 81 with them. Then as most have said the M cutout was used with marinoni in script on the seat stay caps for the specials and a plain old M on the caps of the lesser models (non-special). Around 1990 they did away with the seatstay caps and transitioned the stays right into the seat lug which was a very elegant design also. I would love to see that bike with the original fork, I never liked those straight colnago jobs.

EDIT: BTW T-mar is the expert.. I have had 5 lugged steel marinonis pass through my hands at one time or another, I am down to 3... I have looked at a lot of them online though. I was at the track yesterday and they still make a nice bike but the all the aluminum pistas had none of the character my 81 Pista has (IMHO). If you email marinoni they will tell you whatever they have on file. I had a generic tre-tubi decal on one I picked up and was pleased to find out it had an SP main frame and the rest was cromor... so much for tre-tubi!