The Helios 44 is a Russian (Zeiss formula copy) lens. Early Helios 44-2 and 44-3 lenses have a “flaw” that renders a very unique bokeh; eventually, Helios “fixed” the problem, so modern day versions of the lens (44-4 and later) aren’t as desirable to collectors as the vintage versions. I got mine for GBP 33.00, approximately $48.99 from this guy, Jeff, who stripped and fully serviced the lens, reblackened the lens edge for saturation and contrast and verified the lens is mold/fungus free. This particular model has a slight blue tinge on the front and rear elements and a golden coating on the inner elements.
I’m using it with at Fotodiox adapter on a Fuji X-T1.
This is a different flower from the same plant, shot in evening light with the Fuji 27mm “pancake” lens:
Not a one-for-one comparison, of course, as the focal length difference affects bokeh, perspective is a bit different, the pancake version was shot using autofocus, yadda yadda yadda. The goal here isn’t to compare and contrast, just to introduce the options and price flexibility with vintage lenses that makes it fun and accessible to go out and play.