Jamin Darlot  Wet Plate brass barrel and rear lens element only. Made in France. Early brass lens barrel with rear element only. Good early Darlot lens barrel, and rear element for you to make a project lens out itt, or if you have the original front lens barrel and element to fit this lens. Focal is about 25". Non-coated glass. No radial drive focusing on this lens barrel. It is missing the gear and knob!. Front barrel inside diameter is about 85mm.  Rear lens diameter is about 90mm. Lens barrel is about 152mm or 6" long. Weight is about 3lb. Retaining ring is 5" diameter. Requires 6x6" or larger lens board. Lens barrel  is in Ex- /User or 6/6.5 of 10 cosmetic condition. Very slight dent along the edge of the rear element. Clean glass. Several fine cleaning marks on the back of the rear element. Couple of fine scratches on the inside of the rear element. NO SEPARATION. Non original aluminum retaining ring, Retaining rings screws onto the lens OK, but not all of the way onto the threads. The retaining ring will hold this lens onto your lens board just fine. Nice early hard to come by brass Darlot lens barrel, and rear lens element.  Great brass lens barrel for you to make your own wet plate lens out of it if your have a front lens element to go with this Darlot barrel. This Darlot lens barrel, and rear element are being Sold AS-IS for Parts Only. NO Return or Exchange. Sells AS-IS with NO RESERVE at a price of $245. I have more BRASS barrel lenses, Kodak Ektar lenses, Large Format cameras and Lenses, Vintage and Collectibles and Soft Focus Lenses. More great buys on my other auctions, eBay Store and Web Page.