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Apparently I missed the real mother-lode. I went to a different antique shop today and the female owner said that her husband collects straight razors (which is why they had none for sale).
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Here's a link to my findings. The J.A. Henckels I got at one shop on Sunday, and all the rest were at a single shop today. Found the str8s on a shelf marked 50% off and couldn't help myself.
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