1c purple, 2c green, 3c red, 5c orange and 10c blue 'George Linn' UNISSUED set of five with 'S.O.D.G.D.E.' official overprints all tied on piece by cds's dated 17 JUN 1915. These stamps were produced as essays for the Constitutionalists in the state of Sonora but were rejected as their sphere of control had extended outside of Sonora when the stamps were submitted. Uncommon.