Thanks Guy. Yes, I am thinking of another Ouverture or a BS3000. Would they automatically be older than a BC2 or a BS4?
Ouverture was produced 1994-2003
BeoSound 3000 was produced 2000-2006ย (There was also the BS3200, similar but with a built in hard drive – I have read many reports about problems with the hard drive, hence probably best avoided)
BeoCenter 2 was produced 2004-2012
BeoSound 4 was produced 2006-2010
With all the above, I would look for condition rather than age.