ah…just checked and it is the second edition where I saw that 112 year for 3p0 , I was mistaken about it’s placement in the book ,There’s no mention of it in the entry for C-3PO, but there’s a timeline in the front of the book that says:
112 BSW4 (before SW Ep4): C-3PO activated.
it also has:
35 BSW4: Clone Wars ended. And issue 17 of the original Marvel comic hinted at Owen and Ben being brothers too , as did the ROTJ novelization .