Bas 2 was manufactured in 70s-80s at Rostov Na Donu (Rostov on Don) together with Bas, Stella, Aelita 2 and Aelita. It is clear that the bass is a pair of Aelita 2 guitar since body and headstock shapes of both instruments are pretty similar (including a cool string tree design). It is following the "Aelita"-"Bass" pair that was produced earlier at the same factory - with a minor addition of "2" to the names. Unfortunately, Aelita 3 and Bass 3 were never made.
The controls feature one "chickenhead" - style switch to choose between two single-coil pickups and two potentiometers.

body closeup: pay attention to the brilliant bridge construction! Only Danelectro is more complicated...	back and face of the bass. A very original string tree design!	The photos were made with kind permission of mr.Dmitry at "Accord" music shop at Sadovaya street in Rostov. phone +7 8632 409 476. (this bass is still on sale in 2003!!!)

Usefull technical information from The Manual for all Rostov-made instruments.