This gun is a TOZ-34 probably souvenir grade - http://www.tulatoz.ru/en/production/detail.php?ID=99&SECTION_ID=7

Again to reiterate the quality that has come from Russia over the years with Baikal / TOZ / TSKIB SOO check out this page(s) - http://www.shotgunworld.com/bbs/viewtopic.php?f=83&t=124415

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Plenty on the net regarding the TOZ-34 including youtube clips if you are so inclined, that said this example is a very facy grade. I have no idea as to value.