This Carl Zeiss Jena Tessar 18cm f/4.5 lens used for my speed graflex 4x5 camera(see last picture). it is in excellent cosmetic condition. only a couple of air bubbles may come from factory. The aperture ring is smooth. I think it is all metal made(may be brass) and very heavy(13oz).

Please check out the series of photo for detail cosmetics condition! you will be getting exactly what you see in those photos. I also offer returns, so you are safe!
I do combine shipping if you order more than one item.
Thank you for looking! good luck on bidding!
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if you have concerns, please contact me first before leaving feedback, you will find me to be very workable.