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It is Vetra CS 60 II. The shortcut goes as follows:

Vetra - the factory where the assemblage is executed;
C - the length category of 9 meters;
S - Scemia, the manufacturer of the aggregates (in cooperation with Renault)
60 - total passenger capacity
II - generation

Trivia:
Length: 9,06m
Chassis: Renault / Scemia
Body: monocoque with integrated framework
Motor: Alsthom TA505
Powetrain: Alsthom
Some vehicles also possessed a ICE-generator - a Peugeot-202 with 1133 cc volume and 22 KW output.

Regards, Serious Sam