used 1910-11 ½d. to 1/-, three of each, and 2/6d. Type B (8 including one with "OS" inverted and a vertical pair, the upper stamp only punctured - R.P.S. certificate), and 1911-12 ½d. to 2/6d. with additional ½d. complete sheet, 1d. with "OS" inverted and 2½d. vertical pair with the upper stamp only punctured), all used, generally fine

Details
used 1910-11 ½d. to 1/-, three of each, and 2/6d. Type B (8 including one with "OS" inverted and a vertical pair, the upper stamp only punctured - R.P.S. certificate), and 1911-12 ½d. to 2/6d. with additional ½d. complete sheet, 1d. with "OS" inverted and 2½d. vertical pair with the upper stamp only punctured), all used, generally fine