The tram in the back is number 1, the one in the front is number 6.

There is a page here where someone took pictures from a book that seems to have pyongyang tramway rolling stock: maybe there is a book in japanese written on the subject (nearly everything from this period is only in japanese).
https://cedarben.blog.ss-blog.jp/2018-08-28

Цитата (Gamerdgl, 02.02.2022):
> maybe there is a book in japanese written on the subject (nearly everything from this period is only in japanese).

Yes, it has some useful information... but nothing about tram-manufacturer, just series and description of some simularities with tram models in Nagoya and some other cities. I'll try to find out is it the same tram models or not.

Citer (Арсений, 04.02.2022):
> I'll try to find out is it the same tram models or not

Thanks again!