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. 
         

                                     Description. 
   Carl Zeiss Jena  Tessar lens with 25 mm thread mount.
4,5 aperture, 50 mm focal length.
"Excellent" condition - please, see photos.
Glass condition: few little marks on the glass, no haze and fungus.
Serial number 3005839.
Please, see detailed photos and ask questions before bidding.
                  

                 Shipping and payment. 
Send within 3 days after clear payment. 
Combine shipping are possible, please, contact me.
Payment - PayPal only.