Up for auction is a nice lot of vintage lenses and parts for the antique camera enthusiast or collector. What you see is what you get. Brass aperture piece is marked "homocentric". Nice collection of parts. The lens aperture does seem to open and close as it should. No lens in that piece though. There are some brass lens mounting threaded pieces as well. Please check out all photos of items as they are part of item description. All items are sold as-is and as antiques. No returns. Winning bidder will pay 21.90 for very careful packing and shipping through USPS Priority Mail which includes both tracking and insurance to continental USA only. No international bidders please. Good luck and happy bidding!