Well, I had this idea in my head that I'd get some authentic old magic lanterns for my grandkids for Christmas. But they all keep showing up looking too junky and dangerous to give to them. So, now I've got the lenses. I actually have THREE 15" B&L triplets and a 12", so don't be shy if you need more... Both are 15" B&L triplets with a focus knob. #1 with the star on it has a built-in flange. #2 has a nice cap and no flange. The rear element is about 2 1/2" in diameter, so they are about f6. Sorry about the crappy photo, but my digital is not cooperating on the focus. Price: $85 each or both for $150. (Or you can have a 15" and a 12" for $150). USPS money order preferred, net to me of any paypal fees if you choose to use it.