BelOMO Helios-44 Silver, 58mm F/2.0, USSR Lens for Canon EF EOS! s/n: 5043080
Helios-44 Silver, 58mm F/2.0, BelOMO! M39-M42 mount, USSR Lens for Canon EF EOS! Based on the lens Carl Zeiss Biotar 2/58. It has 8 blades diaphragm! Included is an adapter for Canon EF EOS without a focus confirmation chip.