Early Wentworth Train Titles by Malcolm Root, BCD Sales Table

250pc Wentworth train titles - Green-Box era, two packaging designs. Shiny multi-lingual boxes with flags and more matte finish.
LMS Class 5
Clouds and Crosswinds, Malcolm Root
Deadly Load, Malcolm Root
Manning Wardle Tank Engine, Malcolm Root
British Railway's Last Steam-Hauled Train
The Duchess and the Clan, Malcolm Root.

We don't understand the significance of 'A Collector's' as opposed to 'A Wentworth'.