To date this is what I have as part of my Black Sabbath collection
Black Sabbath - The Dio years album signed by Ronnie James Dio backstage at Athen's Rock Wave Festival in Greece on 01/07/2007.
Mob Rules signed album sleeve by Ronnie James Dio backstage at Birmingham Academy 27/05/2008.
Judas Priest Record Collector rare metal feature (2005)
Dehumanizer album sleeve signed by Ronnie James Dio & Vinny backstage of Rock Wave Festival Athens, Greece 01/07/2007.
Acquired from Terence Timmins Age 28 Led Zeppelin IV (4) vinyl LP bought at at second hand record shop for £5 (price sticker is still on) Terence has been a fan for about 12 years
Black Sabbath : Live at Hammersmith Odeon signed by Ronnie James Dio backstage at Birmingham academy on 27/05/2007.