Rivarossi HO Scale Ref 1799 Breda Ferrovie Nord Milano Railcats Md 520.01 and Md 520.02. Powered car and non-powered. Joined by extension bar which I have show in photo as, like me, it may not be obvious how it goes but in essence it's "hooked from below" (if that makes sense). Cars are in excellent condition, little used. Has been tested and ran very well though may improve with use/service. Lights on power car in working order. Comes in original tidy box with paperwork.