Unboxing the Hornby LNER Raven Q6 Class 

The object behind the chimney is a "Snifting Valve" -the big sandboxes -that's a builders plate, the linkage on the LHS is for the Mechanical Lubricator and the "handle" on the front of the tender is the tender handbrake. another variation of the tender is the coal rails were cut back flush with the coal space backplate. In 1958 63365 [52K] and 63402 [52J] had these tenders although they did tend to get swapped around. Also don't forget these locos were RH drive.

Great video Peter! :D Keep em up! :D