The Mistral PS-2 is probably underrated amongst its many metal brethren, but I find the feel of its body knock mechanism cleaner and more satisfying compared to the later models like the half-plastic PS-11 and even the two PS-12 (which very likely used the same internals as the PS-11).
I can’t help but think that the PS-2 was probably doing well enough to transition from old to new logo.