Well it doesnt show up in my 1970 Giulia parts manual, but in my Jan. 1965 Ti manual it says it is the rear bumper for a Ti. I think it says the brand is Brunsig? It has a funny note next to it saying it was cancelled and replaced with 105.14.59.001.03. The .02 part was a Illea brand bumper that was also cancelled and replaced with .03 as far as I can tell. There are a few bumper variations that I remember seeing in a thread on the forum somewhere.
The later parts manual shows 22.214.171.124.00 for the rear bumper