Czechoslovak State Railways

Section: Regular passenger coach

B 20-41

UIC number(s): 51 54 20-41

Bp

Also known as: Bai

UIC number(s): 50 54 20-11, 50 54 20-12, 50 54 29-22

ABm 39-41

Also known as: AB, AB³⁴⁹

UIC number(s): 51 54 39-41