Vintage collector's damask "Northern Bear"

A very rare fine glass bottle of the "Northern Bear" series of the USSR times from about the middle of the last century, made based on Malevich, you can still sometimes see bottles of "Northern" cologne, and a bottle from the same collection is very rare. Currently, it is collectible, since it is almost impossible to meet it. The damask has a delicate engraving on the central part and a cork lid with a bear made of thick frosty glass. The condition is very good, without chips and scratches, the only drawback is a cloudy plaque from the water inside, which can certainly be removed, but I don't want to use any chemicals. substances and abrasives, so as not to harm, perhaps someone decides to use it for its intended purpose.