6-COR unit No.3046 (motor brake second coach S11003S) at the Micheldever store on 31 August 1969, shortly before being consigned for scrap, with the brake van already attached for its final journey. ©Roy Burt/Gordon Edgar Collection

I am indebted to the Southern Electric Group for the following historical information:

Between November 1965 and April 1966 the best of the Pul and Pan vehicles were put together as ten 6 Cor. units, numbered 3041-3050 and formed motor brake second, trailer second, trailer composite, trailer first, trailer second and motor brake second. Initially they were spare on the Central Division but were all transferred to the South Eastern Division in July 1967 for use on rush hour and excursion services. The trailer composites were then downgraded to all second class. Their working life on the South Eastern lasted only a few months and the units were put into semi-retirement at the end of the year. They were all withdrawn and scrapped between 1968 and 1971.

http://www.southernelectric.org.uk/features/historical-features/fleet_pan.html#6cor