Looks like a fun lens for photography and some video projects as well. I think it is $400 which seems reasonable. F2.9 to 16 so a relatively fast lens. It uses a Waterhouse aperture.
https://www.cinema5d.com/lomography-kickstarts-a-new-old-lens-the-daguerreotype-achromat/
https://www.cinema5d.com/lomography-kickstarts-a-new-old-lens-the-daguerreotype-achromat/
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