Cool looking Gas Masks for Beginner Collectors

Cool and interesting looking gas mask/respirator ideas for beginner collectors who may want to buy unusual looking masks fairly cheaply.
As well as the generic Soviet Masks, there are some interesting designs such as the Finnish M61 and other M9 related masks, The French M51 and the Hungarian M75.

The 75M I incorrectly referred to as the 76M, thanks to the Hungarian gas mask collectors for correcting me.