Just to round out the information on this thread, “BPD” are the initials of Bombrini Parodi-Delfino, an Italian form with offices in Rome and Mila and a large industrial complex at Colleferro.
The white-tip round is also found in 9mm Parabellum date 52 (1952). It is what we call a hollow dummy, with brass primer cup, plain brass case (no flutes or cannelures and a non-magnetic FMJ RN bullet with white-painted tip. There is a 7.9 x 57 dummy as well, date 953 (1953),but it is entirely nickel-plated, including the primer cup.It is hollow as well, but the spitzer type FMJ bullet is magnetic
I don’t know who the 7.9 x 57mm dummies were made for. The box label is in English, however… I do not know about the 9mm one either. I have never seen a box for it. England was producing a large amount of 9mm dummies in their own factories in that era. The 9mm one is the scarcest of the three, 9mm, .303 and 7.9, by far.
The small “O” on the primer indicates an inert primer cup. It is not to be confused with the pre-WWII “O” marking on RWS non-corrosisive (Sinoxid) primers, nor on the Remington primers with “O” on the cup meant for commercial reloaders.
Just thought I would add this for the benefit of those seeing this thread on don’t have this information.