A small outside interior of diesel locomotive 07123-3 from depot of Plovdiv - you can see a Lugansk builders plate.In nowadays the loco is fitted with an electric train heating at Plovdiv depot and is numbered with number "1" after its own class.Before installing of electric heating , the number after class was "0". Digital photo Veselin Malinov,e-mail: veso_bog@abv.bg