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tbobbeing the parochial and nationalistic nation we have seemed to become in the last 4 years, we might consider "pre-war" to mean prior to the United States' entry in to World War 1 (ignoring the fact WW1 raged through Europe without our involvement for over 3 years) which would mean cards prior to April 1917 and would thus include the popular E 90-1 through E107 caramel cards and T213-2 Coupons.