3 d. G. R. I. On 30 penny imperial yacht, spacing of lines type I, variety \"inverted overprint\", tied by black oval cancel \"Rabaul Jan 1915\" on piece, faultless condition, of the anyway small edition from 263 values carry only a few an inverted overprint, one of the few bargains these stamp to purchase, expertise BPA and Scheller, SG No. 55 g, Gibbs 6 d.