These are new old stock replacement lenses for the Russian GP-5 gas mask but holy shit did they age like crap.
The tin and inserts are kind of cool but the lenses just look melted. Absolutely useless unless you're collecting Russian paraphernalia. We checked the tins and they seem to have 6 lenses, or 3 sets per.
Probably shouldn't have used a melty polycarbonate, good job Russia!
