The yellow Doniselli also caught my eye...
Magistroni headset - prewar until 1970s
Balilla fully-covered brake levers - late 1950s or later
Sport front derailleur - 1953 until 1958 (approx)
GS rear derailleur - 1953 until early 1960s (approx)
Magistoni crankset with cutouts in the spider arms - 1960 or earlier.
Perhaps Campagnolo 1010 dropouts???
I guess the bike as mid to late 1950s... maybe early 60s at latest?
Aldo Ross