Photo:
Tim Cook - Mark 1 M15319 in Up Yard siding March 2002

M15319 is a side corridor 'composite' coach with three second-class and four first-class compartments either side of a cross corridor. This coach was moved from Cricklewood to Aylesbury during 1976. It arrived at Quainton with other stock by a track slew of the BR line in July 1977, for details of stock arriving in this delivery see the Visitors section. It was scrapped during February 2008.

References:
Good News from the C & W - Quainton News No. 29 Autumn 1976
The Gresley and Other Coaches - Quainton News No. 38 - Spring / Summer 1979

Photo:
Robert Frise - Mark 1 M15319 in Up Yard siding June 2003