Lyn
The "tarted up" version (with added colour) is on the Phyllis Nicklin section of the Keith Berry site with the cars in exactly the same position, so it must be a Nicklin. Incidently I've come accross an old possesion of Phyllis Nicklin by accident. My local Oxfam shop was selling off old unbound copies of the magazine "The local historian" donated by someone. The first two or three volumes were all stamped Extramural studies library, Univ of birmingham, except for one issue, which had handwritten on it P.A.Nicklin. Maybe one day, when her work is fully appreciated (and accessible) it'll be worth something !!.
Mike