Here are a few excellent and informative web sites that are well worth a visit:
'Where the Broadcast Dinosaurs live'
'The Museum of Extinct Video Tape Recorders'

'BBC . VT - a record'
(This collector also has a VPR-5!)
(And this collector also has a VPR-5!)
(BBC archive pictures of how things used to be during better times.)
Once Britain made some of the best audio tape recorders,
yes really! See some of them here.
(These two highly knowledgeable American collectors both have quite remarkable web sites.)