Introduction.
Welcome to my sales! 
First of all, I want to say.
 Practically all of the things sold me, not new ones.
 They are made of 20-50 or more years ago.
 I sell the same items in real working condition, that is, they have the service.
 I am thoroughly and meticulously pointing out the state of items, and the customer will have to decide whether to buy or not.
Sales on ebay makes very high demands on the quality of the goods, and old things must be as new to the concept of the buyer. 
Of course, I try and carefully preparing their things for sale. 
And yet, there are times when the camera or lens stop working. Judging by my reviews, it is fairly rare.
On Soviet factories was quite acceptable 4-5 percent defective products. 
I'm not talking about some things, such as Kiev-17, or Almaz-103 camera. In this case, the numbers are greater than 50 percent. 
You may be dissatisfied with your purchase, but in any case I put work and tried. Ask it to take into account before evaluation using feedback.
Therefore, when there is a problem in the first place please contact me.

                                               About the condition.
I use the following scale state of things:
New - Like new - Mint(+,-) - Excellent(+, - ) - Good working - As is. 
A separate listing of technical condition. As a rule, I sell things in working order. 
At the lens state. Soviet lenses, even new, ones can have some cosmetic flaws. 
I put the original document Krasnogorsk optical plant. 
It regulates the amount of defects in NEW LENSES. 
As is clear from this document, glass state has never been perfect.
See translate: 
NOTICE TO BUYERS! 
Lens modern, high-quality lenses manufacturing
 from special varieties of optical glass, in 
cooking is usually not possible to avoid gas 
 bubbles. They can always be seen in the complex photo-
graphic lenses. These bubbles do not affect the 
the quality of the lens. Furthermore, Soviet GOST standards allow 
Availability: opaque inclusions up to 0.5 mm 
not more than 6 pcs., some scratches width to 0.02 - 0.03 mm 
and no longer than half the diameter of the lens in the light amount 
3 pieces, specks of up to 0.3 mm in diameter and the number of not more than 
2 pcs., Lint cotton no longer than 3 mm and not more than the number 
2 pcs. one lens. 
Therefore, the plant does not accept complaints about the bubbles 
in lenses and purity acceptable defects or exchange 
such lenses. 
Quality control department 
Krasnogorsk mechanical plant 
See the original document in the description photo. 
I usually point out even minor defects. 
This may deter a buyer, but I have to say that such defects have absolutely no effect on image quality.
But many Soviet lenses have excellent optical quality, are made of first-class kinds of glass and had a very affordable price.                                                                                        
                             
                                     Description. 
   Up for the auction Russian Zenitar-M lens with M42 mount.
50 mm focal length, 1,7 aperture.
Krasnogorsk optical factory, 1985 year release.
I consider, this one of the best lens for Soviet SLR cameras. 
Excellent optical design, excellent workmanship. 
The lens is still highly valued in 80-90 years XX century.
 I must say, that the modern lenses with the same name have a much simpler design and material.
I also want to add in relation to issues. This is not an analogue of Helios-44-77 lenses. 
It is also not Jupiter-Sonnar structure. This is a separate development. 
The lens is worth more than 2 times more expensive Helios lenses and had a very high status of Soviet photographers. 
She completed with two best and most expensive Soviet SLR camera - Zenit-18 and Zenit-19.
The lens is gradually disappearing from the market. 
Buy it harder and more expensive it is. Unfortunately, it is a reality - such lenses do now unprofitable.
Excellent-  general condition, marks and abrasions in the paint of the lens body - please, see detailed photos. 
Unfortunately, the paint is not durable as metal or chrome-plated. 
Glass condition - clean visually front glass, 
few little marks and one very little scratch on the rear glass - please, see photo .
This is a completely non-critical traces of normal use, the glasses do not have scratches and abrasions. 
The lens used carefully and skillfully.
Some inclusions inside glass. 
As can be seen by transmitted light, the lens has a light haze inside. 
This is typical of all these lenses, even the new ones. 
Of course, I deliberately chose to emphasize the viewing angle characteristic of the lens. 
This should not scare - it usually.
She hardly distinguishable and does not affect the picture quality and the appearance of the lens.
Aperture blades - OK, without oil.
In general, the lens glass meet the standards specified in my link. 
Please, see detailed photos and ask questions before bidding.
Serial number 853986.
Comes with front and rear lens caps.
                                                
                 Shipping and payment. 
Send the day after clear payment. 
Combine shipping are possible, please, contact me.
Payment - PayPal only.