This very nice HO gauge locomotive by Roco is 04112A a DB BR 58 / Prussian G12 steam locomotive in black livery. It has running number 58 525. 

The Prussian G 12 is a 1'E 2-10-0 goods train locomotive built for the Prussian state railways. Between August 1917 and 1921, a total of 1,168 G 12s were procured by Prussia. The majority of locomotives of this class were taken over by the Deutsche Reichsbahn. There they were given the following operating numbers: Prussian G 12: 58 1002–2148. The Deutsche Bundesbahn retired their units in 1953. The East German Deutsche Reichsbahn still had 300 machines in service in 1968. 

Two remain in preservation. 

The loco is in excellent condition as you can see in the pictures, I have not tested it but I can see no reason why it would not run, so it it is sold in untested condition, but a complete external visual inspection has shown no reason why this loco would not run and it the overall condition is very good. It comes complete with its box. The box is in good condition.

Overall this is a really nice scale locomotive and would look fantastic 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!).