Nauru, 1918, King George V, ½p-2sh6p overprints on cover, complete set of "Nauru" overprints, lacking 1923 1½p value, on 4 matching registered covers to Berne, Switzerland, postmarked "P.O. Pleasant Island Nauru", Very Fine and scarce. Scott No. 1//13  Estimate $150 - 200. $0 (Image)