This really nice and rare HO gauge loco by Piko is 50501 a DB BR 98 / Saxon I TV steam loco in black livery, it has running number 98 003

The Saxon class I TV were a class of 19 German 0-4-4-0 Meyer tank locomotives built for the Royal Saxon State Railways for service of the Windbergbahn. The Deutsche Reichsbahn assigned them to Class 98.0.

All the remaining locomotives survived World War II. Two locomotives were badly damaged in the air raid on 13 February 1945, but were rebuilt. They continued to be used on their main line in passenger and freight traffic. Between 1952 and 1962 they were used double-heading uranium ore block trains to Dresden-Gittersee. The trains consisted of 10 wagons with a capacity of 20 tons each. The eight remaining locomotives transported 560,000 tons of uranium ore to Gittersee every year.

The loco is in good condition as you can see in the pictures, it is tested and runs, a complete external visual inspection has shown the overall condition is very good. The box is in good if slightly shelf worn condition. 

Overall this is a decent little basic locomotive and would look nice on a layout.

Do please have a look at my other listings, I typically have various HO and OO locos on offer as well as an extensive range of imported N gauge locos and other items. 

Note: I do recommend all locos are cleaned & serviced, as they have some age to them even if the quality looks at the highest level (fairly standard advice for all locos!).