Sofia tram ticket set of 10 (adult). August 2016.<BR>
This set contains 10 talons for 10 trips. These tickets have to be punched using the puncher in the tram/bus.
The backside of these tickets reveal the punching, which is characteristic for one car. 

Scan by M.Koblischka
#m.koblischka@mx.uni-saarland.de