Thank for the interest Jojo
From the italian wikipedia:
"She recorded Amore Baciami, composed by [...] in 1947 and the success was [...] that Rossi gained 1.400.000 liras in the first six months of 1947".
I guess we can trust Wiki for the recording date and 1948 for the release and success:
https://www.hitparadeitalia.it/hp_yends/hpe1948.htm.
Peace
Lello