The only "true" macro lens from former USSR, which seems to be an exclusivity of LZOS, which already made the "macro-like" version of the Industar 61 L/Z.
The Volna-9 looks like a big Industar 61 L/Z.
The diaphragm of the Volna-9 (as the one of the Industar 61 L/Z) has a particular shape when closing.
Tests: Please note that these tests were made with the means at hand, not in a "scientific" way. See here.
This is a macro lens, the results are excellent at an average distance for which it has theoretically not been calculated. For macro with a digital camera, there is a problem with flare, which is set by "flocking" the inside of the back ring.