and dated "July 23/83", bearing 2c., 4c., 8c. (imperf.), 13c. (imperf.), 16c. on 17c., 25c., 30c. (imperf.), 50c. (imperf.) and 2r.50 (imperf.), the 8c., 25c., 38c. and 2r.50 marked "This (These) colours cannot be improved upon". A further sheet has been cut to fit and affixed so that the additional stamps lie next to the originals, this bears 2c. green, 4c. carmine, 13c. slate, 50c. orange and undenominated Barbados trial next to the 16c. surcharge with the endorsement "The Barbados stamp is given because it somewhat resembles the new general stamp which is being prepared for Mauritius, and which will be used for the 16 cent duty". Photo" /> Proof An Appendix sheet headed<I> "Mauritius Postage Stamps Existing and proposed Schemes of Colours"</I> and dated<I> "July 23/83"</I>, bearing 2c., 4c., 8c. (imperf.), 13c. (imperf.), 16c. on 17c., 25c., 30c. (imperf.), 50c. (imperf.) and 2r.50 (imperf.), the 8c., 25c., 38c. and 2r.50 marked<I> "This (These) colours cannot be improved upon"</I>. A further sheet has been cut to fit and affixed so that the additional stamps lie next to the originals, this bears 2c. green, 4c. carmine, 13c. slate, 50c. orange and undenominated Barbados trial next to the 16c. surcharge with the endorsement<I> "The Barbados stamp is given because it somewhat resembles the new general stamp which is being prepared for Mauritius, and which will be used for the 16 cent duty"</I>. Photo | Christie's