50c Red Violet (517).
Pair and single, used with 8c, 20c Franklin, 2c and 5c Documentary (508, 515, R229, R232), tied by Chicago Ill. ovals on typed letter from Chicago Federal Reserve Bank to the Chicago Postmaster paying postage and tax on registered locked pouch to Detroit Federal Reserve Bank, violet "Chicago, Ill. Reg. Dev. Jan. 22, 1919" datestamp, file folds affect three stamps, otherwise Very Fine and interesting usage of the Perf 11 Franklin issues
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