Many of the Stato Civile birth records contain notes in the margins cross-referencing marriage events. The birth record for my great grandfather is no exception.
But this record also has a stamp on it:

I think this might be cross-referencing a death record (which would be nice, since I don't know when this ancestor died), possibly 7 December 1962? I think it says "addì 7 - 12 - 962 decedeva in Modugno". But maybe not 1962, since there's a number missing from what would be the year, and if the Stato Civile records were still being kept in chronological order at that time, record #17 would probably have fallen much earlier in the year than December.
Thoughts or suggestions? I'm 95% confident this references his death, but when is the big question. I suppose I could write to the Stato Civile in Modugno to ask.