I picked up the bike over the weekend and worked on disassembly.

The serial number stamped on the bottom bracket is A4400 A5

The aero-brake levers are labeled "SLR".

Curious if the stem and handlebars are original. The stem is stamped with "SR." The handlebars appear to be "OLD LOGO Cinelli Campione Del Mondo Mod 66-42."

The seat is labeled "Linea" and the seat post is stamped "3ttt," Google says "Mod Record?"

Each decal has a black "X" through the B in Bianchi. Any significance? I haven't seen this in my interweb searches.

All other components are Shimano 600 stamped XX-6207.

The frame is pretty dinged up. Contemplating a home repaint. If I decide to go this route, what's the best way to source a new decal set?

The rear DR and cranks are pretty trashed as well. Thinking about using oven cleaner, 2000 grit, and polish. Any tips?