I had the complete set until recently, now I only have the engine and cars. The cars include: a CP freight car with sliding doors, a CP coal car, a Dairymen's League milk freight car and a yellow CP rial caboose. I'm new to this hobby and don't know much about trains or their history, any help/advice would be really appreciated. Do I have a decent start to a scale rail road or what?

I have an old Bachman Canadian Pacific HO scale engine and cars. It was given to me about 22 years ago and was old then. I can't find a model number but the description is brown and grey with yellow striping and it has the number 4009 on the side. Can anyone tell me the actual age of this train and if it has any value?