The models were about an inch long or slightly longer, 1/4 inch wide, cast in one piece in plastic, hollowed out from below, probably an early formula polstyrene, all in the one colour. I was given about 30 of them over a period of about 6 months. They has a coupling arrangement to form them into trains, downward facing socket at the rear of the loco and at one end of each vehicle and upward facing hook to match at the other. I remember there being a steam loco probably 4-6-2, a tender to match, I think on two 4 wheel bogies though it could have been larger, a standard USA bogie box car and a USA bogi caboose.

I don't know whether they actually came in the cigarette packets but they were small enough to have done so.

Robin