1902-11 collection (180), the mint including set to 25r. (vertical crease) and 1906 1a. corner pair with paper fold resulting in one corner of one stamp remaining blank, the used with 2r. to 25r. (stains) and 1906 "¼" on ½a. with inverted surcharge used on piece with clandestine cancellation? Cat. £1,500+