Short answer: I don't know. Long answer: there are deviations from the standard with ESCO products. They just weren't that careful. Also the difference between 5/8 and 7/16 (1950) is really small. Absent an uncut sheet or a checklist from a sample I am not a fan of making absolute pronouncements that might dramatically boost the value of a card. it seems weird that they would issue a 48 but no 49.
Last edited by Exhibitman; 03-27-2021 at 12:32 PM.
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