used COOK ISLANDS: 1892-1923, a selection of values, including a few Aitutaki, New Zealand and Penrhyn etc., selected for cancellations, including N.Z. ½d. and 1d. pair on piece with Rarotonga c.d.s., various types of Cook Is. c.d.s. and piece with 1919 1½d. (3) cancelled by Mangaia c.d.s. in violet. An interesting lot. (42 items)