Associated Motorways Winter 1954-55 timetable cover

The Associated Motorways timetable book cover (left is the rear cover and right is the front cover) for the Winter period 1954/1955 was similar to that used in Summer of 1954 although this copy was not colour printed. I am not sure if this was an advance copy style or whether it was an economical final copy. Certainly in later years I don’t recall there being an advance copy issue for winter as there was for summer.