2 main types of 10.000 Lire notes were issued from 1945 to 1962
SELECT NOW YOUR NOTE WHICH LOOKS MOST ALIKE TO ONE OF THE BELOW PICTURES

Congratulations! It is
P-87 (a & b)
issued 1947-1950
(the date you find at upper left on front)
The governing date is the upper (more recent) one.

Congratulations! It is
P-79
issued 1945-1947
(the date you find at upper left on front)
The governing date is the upper (more recent) one.

This note exists in 2 varieties and was issued from 1947 to 1950
Have now a look on the seal on front and select the one on your note

Congratulations! It is
P-89 (a-d)
issued 1948-1962
(the date you find at lower front)
The governing date is the left (more recent) one.