My 2006 Bianchi has a Campagnolo Veloce groupset with similar bottom bracket. Mine is an AC-S, presumably for Aluminum Cup - Solid spindle. Your AC-H has a hollow axle for weight savings. There was also an SC-S bottom bracket with steel cups. All three are interchangeable, the primary difference between them being weight.

If I remember correctly, Veloce, Centaur, Mirage, Xenon, and Daytona double cranksets of that vintage (the generation preceding outboard bearings) can use that BB with 111 mm spindle length. The 115 mm symmetrical spindle is for triples of similar level. The upper-end Chorus and Record cranksets at that time used an asymmetric spindle.

As for what it's worth, I just glanced at eBay and the two recent completed auctions for that exact bottom bracket went for $26 and $43.