These are the reported serial numbers which begin with a two letter prefix from the Monza, Italy plant.

Date	Low in allotment	High in allotment	Model	# allotted
1934	MA000001
	MB373473		227
1968-1972	MD137812		239M
1968-1972	MD286872		237M
unknown	ME983329		237M
unknown	MG445572		257M
3/5/73	MHC23211		257M