My favourite album but I’ve only owned 4(?) copies in 33 years – only 796 to go! Who has the most copies of a single album then?

http://www.npr.org/sections/therecord/2017/03/11/519306037/velvet-underground-and-nico-50-years-first-record-800-copies-collection?utm_campaign=storyshare&utm_source=facebook.com&utm_medium=social