Ого, PCC с баяном!

Смотрится просто шикарно.

Хм, не знал о существовании PCC в сочленённом виде.

Это местная переделка

When the PCC tram was designed in the early 1930s, the articulated tram did not yet exist.
It was the (unknown to many) Rome tramway engineer Mario Urbinati who only managed to design a working articulated tram in 1938.

https://it.wikipedia.org/wiki/Mario_Urbinati
https://it.wikipedia.org/wiki/Tram_STFER_serie_400

The war delayed practical application, but many factories, including Düwag, adopted his system.
For the American P.C.C.'s, this evolution came too late. The licence to build P.C.Cs in Europe was bought exclusively by BN in Bruges, Belgium, which built European variants, but using the typical PCC technology.
Later, BN built (European) articulated P.C.C.'s, which still run in Brussels today, using the technology of Italian engineer Urbinati for the articulations.

In Sarajevo, they assembled these trams themselves - but also using the same technology for the articulations.

Tatra T3 next to PCC, is "surrealistic combination"
Tatra T3 рядом с PCC — «сюрреалистическая комбинация»

This is also the ČKD Tatra K2YU articulated tram.