M15319 was 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. Due to its deteriorated condition 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