Shell Research 1944 Ad

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Shell Research 1944 Ad. This color October 9, 1944 ad states How heavy is a pound. It may be handled only with Chamois faced forceps. It rests on a quartz plate, sealed under double glass bells, U. S. Prototype Kilogram No. 20. Picture by Atherton shows U.S. Prototype No. 20 the exact measuring device. Magazine tear sheet picture is taken through plastic and may show wrinkles or crookedness that is not in the ad. This original magazine tear sheet measures 10 1/4 inches wide by 14 inches tall.