Helios 58mm F2.0 Lens. 52mm filter thread is fine. Test report is from Amateur Photographer magazine 21st March 1992. Serial number is 87292516.
Helios 44-2 58mm F2.0 Lens Sony E Mount Full Frame KMZ FACTORY Bokeh King
Canon EF Fit Lens Helios 44m / 44m-4 58mm F2 Legendary 44-2 Swirly Bokeh KMZ
KMZ HELIOS 44m 58mm F/2.0 Cine mod lens Canon EF mount BOKEH Helios 44-2 2nd gen
Helios‑44M‑4 58mm f/2 M42 Lens – Classic Biotar Design – Very Good Condition
HELIOS-44-2 58mm F/2 M42 Mount Prime Lens for Camera
Helios-44-2 Vintage Camera Lens 58mm f/2 Made in USSR Manual Focus Photography
