Let me introduce you to an excellent vintage lens, production of the USSR.
 
MC Helios-77M-4 50mm F/1.8 Super bokeh! USSR Lens for Zenit, Pentax. M42.

Artistic portrait lens with good sharpness and beautiful swirling bokeh.
Excellent sharpness at an open aperture, very beautiful bokeh, even more twisted than Helios 44.

Helios 77M-4 is a great lens for SLR cameras, produced in Soviet Union.

The photo is of the actual item for sale!

Through appropriate adapter this lens can be installed on any modern SLR and mirrorless cameras, such as Canan EOS, Nikon, Pentax, Sony and more. (Adapter not included).

See the test photo taken by me with this particular lens without any processing!

Included is the front and rear caps.

Item specification:
Lens mount: M42
Focal length: 50mm
Relative aperture: 1:1.8
Scale of diaphragms: from 1.8 to 16
Diaphragm: Auto, Manual
Focusing range: from 0.45m to 10m to infinity 
Filter mount: M52x0.75
       
Condition:
It's in Very Good Working Condition. External condition can be estimated from the photo. Front and rear lenses are clean. There is some dust inside. The diaphragm-control ring turns smoothly and accurate. The focusing turns smoothly and precise.

Payment:
Payment should be sent within 3 days after purchase. Otherwise I can't guarantee availability of the item. 
I'm not responsible for any customs tax that can be charged in a country of delivery. Please, get known the customs rules in your country before bidding.

Shipping Policy:
Shipping from Ukraine. Shipping available Worldwide. I'll ship via registered airmail during 1-3 working days after payment is received. Item are carefully packed usually with bubble wrap in carton boxes.

Don't worry, delivery from Ukraine works as usual! All parcels are shipped from Kyiv on time, however, delivery times depend on transport companies that transit outside of Ukraine. In any case, all parcels are delivered. There may be delays, but this has nothing to do with events in my country!

Save on shipping! When buying multiple items, shipping is combined! I recalculate the shipping cost and issue an invoice for payment, taking into account the total weight of the package.

Return Policy:
Item must be returned within 14 days after the buyer receives the item. Shipping fee will not be refunded. All items must be return in original conditions without any physical changes with all of its components.
Return shipping charges are the sole responsibility of the customer.

Thank's for looking my store!

If you have any questions - Please ask! I will try to answer in detail!

Please see my other offers! There are many interesting items!