BDZ steam locomotive class 01.23 in depot Sofia , 27.03.2010 , he is manufactured in locomotive factory SLM Winterthur-Switzerland in 1935 , 
he work to 1973 year and then was left by a locomotive cold reserve  base Asenovo , 
was restored as museum operating steam locomotive in 1988 year  in depot Sofia.

Digital photo by Chavdar Nikolov , e-mail: chavdar.nikolov@gmail.com