Mozart Signature Up For Auction, Expected To Fetch $100K

For all you Mozart buffs out there, there's a piece of memorabilia up for grabs: his signature -- but here's the catch -- you need some seriously deep pockets if you want to snag it. Gotta Have Rock and Roll has the legendary composer's signature up for auction -- and it's expected to fetch anywhere from $100k to a whopping $200k -- with the bidding kicking off at $75,000. Mozart's signature, written in black…