French tin, early 20th century. The fine print suggests this is good for a number of ailments, but it is especially recommended to soothe the throats of orators, singers and professors (!!!!).
Cocaine - Wikipedia
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French Cocaine Tin
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Cocaine - Wikipedia
French Cocaine Tin
Cocaine - Wikipedia
La Baleine Fine Crystals Canister, Sea Salt, 26.5 Ounce : Grocery & Gourmet Food