3552. Assumed to be London Underground 1973 tube stock built Metro-Cammell. Piccadilly Line. Not found on Urban Electric Transit website. Photo location not known, 28.03.2006. : r/Subways
1973 Tube Stock With Luggage Racks | District Dave's London Underground Site
London Underground 1973 Stock - Wikipedia
SQUAREWHEELS.org.uk – 1973 tube stock
Island Line 1973 stock | Stagecoach planned to use 1973 stoc… | Flickr
225 London Underground 1973 Stock EMU at London, United Kingdom by D201@EAL | London underground train, London underground, Tube train
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British Diesels and Electrics: London Underground 1973 Tube Stock
3D Printed 1973 Tube Stock - YouTube
B/W print; Driver's cab of a Piccadilly line 1973-tube stock motor car by John Wender, 17 Jun 1975 | London Transport Museum