Preserved Eastern National MPU52, a Leyland PD1A with ECW L27/26R body, new in 1947 and now preserved at the Castle Point Museum.
It carried three fleet numbers with ENOC, originally 3911 becoming 1121 in 1954 and then just surviving the renumbering in 1964 to become 2106. Click here for a picture of similar MPU36 when brand new.

Photo taken by Ian Banks, Sunday 14 October 2007, Castle Point Transport Museum, Canvey Island.
Click here for Ian's Fotopic site