OK, this is really obscure! I have a box Rivarossi 6306 which is (i think) a motorizing kit for 11331. Do these numbers mean anything to anyone? I bought it many years ago, cheap, thinking I could power a streetcar or something.

Maybe there may be a clue on this site or maybe the owner of the site can help.
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Thanks, Ray!
I have found that the unit is for motorizing a DB class 42:
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if my sub-basic Italian is right.
I'm not sure why it would need motorizing -- was this a plastic kit?

I've seen O scale Rivarossi unpowered models that motorizing kits were sold for but I haven't seen them in HO scale.