WRENN formula '152' The first series sets were all AC.

First series box lid

Five sets were available. Set No.1 - oval - 4" rad - 50" x 12" Set No.2 - fig.8 - 8" rad - 63" x 20" Set No.3 - fig.8 - 4" rad - 70" x 20" Sets No.2A and No.3A as No.2 and No.3 with an extra car and controller.

First series box

Two extension packs were available. Extension Pack No.1 converted a Set No.1 (No.0 2nd series) to a Set No.3. Extension Pack No.1A converted a Set No.1 (No.0 2nd series) to a Set No.3A.

Extension pack

The second series sets came as both AC and DC.

Second series box lid AC

Six sets were available. Set No.0 - oval - 4" rad - 31" x 12" Set No.1 - oval - 8" rad - 49" x 20" Set No.2 - fig.8 - 8" rad - 63" x 20" Set No.3 - fig.8 - 4" rad - 70" x 20" Sets No.2A and No.3A as No.2 and No.3 with an extra car and controller.

Second series box

Boxes had various internal layouts. The depth was variable to suit the number of track sections.

Second series box lid DC