My father has an incredible collection of about 700 albums and singles collected since the late 60s. Some of them are worth 50p, some are worth £500, and my own personal collection is Iron Maiden albums/singles signed by Nicko McBrain when I met him

Also have an Xmas card signed by not only Iron Maiden but the entire world tour crew from I believe the 1992 world tour (maybe earlier).
The prized signed item is my Iron Maiden - Edward The Great LTD Picture Discs. Never played, never scratched.