Yesterday in the evening I was walking with some friends in CERVIA near the ROMAGNA'S SEA.
I found this old MV near restaurant.FANTASTIC!
I was waiting the owner for ask if was for sell.nothing.....
Do you know what MV was???(sorry for bad photos,I had my phone only)
It's the Rapido Sport I believe. My TR is a '55 and looks very similar but with a few important differences like the shape of the exhaust outlet (mine is a shark's fin style) and the large bolt head on top of the fork-neck.
I too have a 1955 125TR, bought as a very used machine - every part was passed it's use by date. After a year of hard work restoring , I rode it in this years MotoGiro D'Italia and came 3rd in the 125cc class.
The bike gave no trouble at all, except the narrow seat!
The large steering head nut I believe is the steering damper adjuster.