this one seems to be a German leftover classified as
I1 and latter as
Elo I didn't know one of them existed in original brown paint and numbering, thanks apapap
according to Nonda's list, old numbering was
Ιπ 110529-114313 but existing almost 4000 of them looks a bit strange...
and this one has a numbering out of the range...
also according the same list, only 20 of them received a new UIC numbering
511 0 000-019let's wait for Jason to get some more info.