It arrived Monday! Two weeks from Ukraine to Canada, by post, not bad. Of course, it needed a bit of overhaul, there is a hand-written note inside saying it was completed on April 27, 1970. Still in very good shape for its age, tight bellows and gaskets, only 2 pallets needed to be re-attached properly.
It's a LMM with a register for the L reeds. The MM are tuned wet. A few reeds were silent or out of tune and had to be adjusted, one reed on the bass side was broken so I replaced the reed plate. Funnily enough, one reed plate on a MM block of the treble side was for a bisonoric instrument! It had G and A reeds and looked like it was original, which means someone played this instrument possibly for decades with a G note that could only be played in one bellows direction!
Otherwise a fun instrument to learn. Typical loud basses as we find in many Russian instruments.