Nearside view of Eastern National Leyland Nationals 1704 and 1705, WNO553L and WNO554L, just delivered with no fleetnames or numbers. New February 1973, withdrawn August 1988 (1704) and September 1987 (1705). The FLF is CF2926 (AEV 820F).
It is a shame the next vehicle in sequence, 1706, is not in the photo, as this is not known to have been photographed as it was written off in an accident soon after entering service (although it wasn't actually delivered until the next month after the photo was taken).

Photo taken by Eric Thompson, Thursday 8 February 1973, Central Works, Chelmsford