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Author Message   Denny Tinkerer Username: Denny Post Number: 63 Registered: 08-2009 Rating: N/A Votes: 0 Posted on Monday, February 21, 2011 - 05:29 pm:    Thanks Glenn. I'm beginning to think it is some kind of heinz 57. It isn't the dual format - 6X6 only. It doesn't have neckstrap rings. All this makes me think it is after '42 but before the polished aluminum top and Agnar, Apotar and Solinar lens names.