I've just acquired a whole-plate Century. It came with an old brass barrel-mount lens that I've not seen before. It's labeled "ACME Wide Angle", and otherwise is identified only with the number 2 and a five-digit serial number. It's equipped with a revolving wheel stop with openings labeled f/11, f/16, f/22, f/32 and f/44. From a quick peek on the ground glass indoors, the focal length appears to be extremely short for the format though, amazingly, on first glance it seems to come pretty close to covering.
Can anyone tell me anything more about this lens?
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