8
            
            
              2008
            
            
              2009
            
            
              2008
            
            
              1917 Opt. 'CHINA' 1st issue 2c block of 10 with plate no. D633, 6c block of 10 with plate no. D201, 10c block of 4
            
            
              with plate no. D5112, mint original gum never hinged and light toning. Yang BP2, BP4, BP6. Photo
            
            
              HK$ 2,000 - 2,500
            
            
              2009
            
            
              1917 Opt. 'CHINA' 1st issue, 1c brown bottom right corner block of 18, showing position S.E. 9-2 Broken Crown
            
            
              variety plus 1922 2nd issue similar corner block of 18 showing the Broken Crown was repaired. Mint original gum
            
            
              never hinged and fresh. Yang BP1a, BP17. Photo
            
            
              HK$ 3,000 - 4,000
            
            
              2010
            
            
              1917 Opt. 'CHINA' 1st issue 25c block of 8 with plate no. A0103; 1922 2nd issue 2c block of 4 with plate no.l1528,
            
            
              and 10c block of 4 with plate no. F4279, mint original gum never hinged and toned. Yang BP9, BP18, BP22. Photo
            
            
              HK$ 2,500 - 3,000
            
            
              2011
            
            
              1917-27 Opt. 'CHINA' 1st and 2nd issue, 25c marginal block of 4 x 2, hinged and light toning. Yang BP9, BP24.
            
            
              Photo
            
            
              HK$ 1,200 - 1,600
            
            
              2012
            
            
              1917 Opt. 'CHINA' 1st issue, 25c large block of 40 with plate no.1 and sheet margins on 3 sides, hinged on top 4
            
            
              stamps only, very fine. Yang BP9. Photo
            
            
              HK$ 1,500 - 2,000
            
            
              2013
            
            
              1917 Opt. 'CHINA' 1st issue, 25c half block of 80 together with gutter margin, Plate no. A0054, an early requisition
            
            
              sheet. Mint original gum hinged on a few stamps only, fresh appearance and very rare. Illustrated on page 22 of Perrin's
            
            
              book. Yang BP9. Photo
            
            
              HK$ 5,000 -6,000