Pictures 13440A and 13440B: Etching was found on the windows of a 51 bus, travelling between Woolwich and Orpington on April 11, when these two boys were on board.
They got on the bus in Cray Road, Foots Cray, at 1.04pm and got off in Sevenoaks Way, St Paul's Cray at 1.09pm.
If you recognise anyone in these photographs, call BusTag on 020 7027 8950 or Crimestoppers on 0800 555111.
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