Still, after over a year I cannot find out anything about this lens I acquired a few years back There are no markings on it except for the apertures. They read 16, 32, 64, 128, 256 & 512 (the old U.S. stops) The lens measures 2-1/4" x 1". The glass measures 1" is Diameter. I measured the lens to be about a 7" focal length. Currently it's mounted on my Speed for some testing this weekend.
Like said, there are no markings on it at all, no numbers or stamps. So I have no clue. I looked through a few catalogs from the 1900's to 1920's I saw a few that came close, but nothing exact. I know it shouldn't matter much as long as the lens works, but it's bugging me that I don't know anything about it.
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