Need help identifying train.

Hi, I am looking for any information on this old train. I think it is O scale, no markings at all other then the bolts on the coal car saying rockford sp co. for rockford silver plate company which opened around 1880. The body of the train is wood and external parts are brass. Obviously a little worn out but was a running working train at some point. I'd like to know any possible makers, age... whatever! I read once that the old german train makers did not mark them in the beginning. I purchased this from a girl selling stuff that was once her grandfathers so I was not able to get any info. Anything would be appreciated. Feel free to email me if you have any input @ sandangel222@yahoo.com