I just picked up a Helios 44-2 58mm f/2 from 1974... and boy, it is fantastic... best 15 gbp I've ever spent!!!!
Nice photos! Since you like that sort of thing, if you haven't already you might also want to try some other similar lenses, such as the Jupiter 9 - 85mm f2 and rather soft and dreamy wide open (at least mine is), creating wonderful blurred images and, thanks to its 15 blade aperture, out-of-focus highlights remain more-or-less perfectly round as you stop it down. (There's another Russian lens, Tair 11-A, that has 20!)
Thanks... i'm checking out those lenses too!