Parke Davis collectible ink blotter from the 1940s advertising Synkamin. The advertisement describes the product as a "water-soluble preparation for treatment of vitamin K deficiencies." It is indicated in "prevention of hemorrhage resulting from hypoprothrombinemia." Each kapseal contains 2 milligrams of Synkamin and they are supplied in bottles of 100, 500, and 1000. Dosage is given. There are illustrations of the chemical compound and of a capsule. The date 6-41 is written in the top right. The Parke Davis identifier is bl-76-1.
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7 X 3.5 inches
Parke, Davis & Company, “Kapseals Synkamin,” American Institute of the History of Pharmacy Digital Collection, accessed December 3, 2023, https://aihp.omeka.net/items/show/569.