Hey no problem about the PM's just do it here if its easier. And I understand wanting to try and piece together what happened, you do feel violated, and you would feel even more so if it turns out to be somebody you know. That would be horrible. Keep me posted as to what the bike shop reply with, as obviously I have not made any contact with them yet.
The frame I have is definitely measured and marked as a 57cm. I agree the nick at the shifters is at the same place and it has the Carnielli sticker on the down tube which is the same. Funnily enough it did not come with the cages, I purchased those from
Wiggle in August, I've got an invoice to show that. We do have similar taste, I chose full silver Campagnolo too, though 10 speed not the 8? you had, and was going to do it with white saddle and tape too before deciding on black in the end.
Unfortunately the black and white pic of the bottom bracket just shows the Cinelli logo, the serial numbers are not visible from that angle and are on the underside.
As noted before yours has the round Carnielli sticker on the seat tube and the red Bottecchia logos on the seat tube which are missing on mine, and I've just looked really closely and there is no evidence or shadow of the round Carnielli sticker ever being there, despite there being clear evidence of the missing red Bottecchia script. And its tatty enough paint that I'm sure its not been repainted in years. I also note than on your pic of the crankset your frame seems to have a red sticker on the drive side chain stay, I think its a Campagnolo one? I guess that was non original and added on afterwards, never seen that before and mine has no such sticker, it could have been removed I guess but there is no trace if it. Mine does have a white Bottecchia script on the chainstay on the non-drive side, but I cannot tell from your pics if yours had one there.
My other first impressions are my paintwork looks a lot worse! I have lots of marks on the top tube and around the headtube. I live in a flat with no garden so indoor pic quality now is rubbish now its dark here, but I'll go outside and take some photos tomorrow during daylight and post them here for a closer look.