I know there is a shop at Clifford pier, in the overheard bridge that sells Russian stuff. I even saw a horizontal indictator for airplanes for sale. Didnt notice the name of the shop though.
Saw quite a lot at Upper Lascar Road (Antique Street), Hong Kong few days ago. Heard some are used in 2nd world wars, and have very nice craving on the bottle, still look very new, selling from HK$80. Should have bought a few.