old model identity

I have an O train set with 999 on the locomotive and various cars that are tabbed sheet steel and looks like screened with NY Central etc. Made in USA looks like from the '50s. I cannot find a mfg. Question is what is it and when?

Thanks

You may want to ask this question in the Classic Toy Trains forum. This forum is for prototype railroad discussions.

Thank you sir

That number was used by Marx. Try http://toyandtrainguides.com/marxtin.htm

and see if your engine looks anything pictured. Also on ebay someone has posted an article on Marx engines

Tom