Following a discussion on "Lancia picture of the day" I went looking (beyond the Dagrada that's well known). The answer was "Facetti, Raf, Raineri and Volpini", only the last of which I'd heard of.
Raf sounds an amazing story...one to chase another day.
In italian
https://it.wikipedia.org/wiki/Formula_Junior_derivate_da_Lancia_AppiaWith google on translation duties:
https://translate.google.co.uk/translate?sl=auto&tl=en&u=https%3A%2F%2Fit.wikipedia.org%2Fwiki%2FFormula_Junior_derivate_da_Lancia_AppiaIs it just me enjoying "poor" translation? I rather liked this:
"In '59 the Dagrada manufacturer uses the Appia engine, believing that this engine, with its hemispherical combustion chambers and its two camshafts in the crankcase, allows to obtain a good volumetric efficiency with the possibility of reaching high speeds of rotation. The Dagrada-Lancia Formula Junior single-seater front engine, with Giancarlo Baghetti at the wheel, portrayed in Monza immediately after the victory recorded in the Vigorelli Trophy (25 April 1960). However, the matter is not easy, especially due to the intricate shape of the intake and exhaust ducts. But the good and tenacious Angelo Dagrada remedies the problem with a chiselling job,"
"Chiselling job" is a phrase I look forward to using in a paddock somewhere.
There's a sentence "Also the change is of Lancia origin, but the matrix is that of the Flaminia . " Anyone here able to help with that?
"After a '59 on the sly" lost something in translation, but clear in context, one to enjoy.