I volunteer at a local DIY shop and we had a bike come in that I'm trying to track down the make if possible. I didn't have my phone with me to take photos but:
- No frame or tubing stickers or head badge.
- headtube shows no headbadge holes so likely a sticker headbadge
- No pantographing on the chain stays or bottom bracket
- chromed chain stays
- nice quality forged dropouts ( I couldn't read the logo - my eyes are getting dim and the phone would have helped.)
- internal cable routing in top tube
- serial number is somewhat readable but again, I need the photo of it
- I suspect the paint is not original due to the absence of frame stickers
- components are mismash of Shimano (Tiagra, Avlio) with a conversion to 1" threadless fork.
- top tube inset Italian flag logo, like the Ciocc picture below


ciocc toptube

This latter element is the only thing I can see that stands out. I've not seen it before so I'm not sure how common it is. I'm not sure if a serial number alone would help establish the builder and, if the paint is after-market, as I suspect, then it may not be completely readable. Any suggestions of where else to look etc. would be appreciated. I'm not convinced I can narrow down anything other than [probably] Italian frame. I can update photos in a day or so of the serial number.