8 x 50-Stamp Sheets: 1909 London, Tilbury & Southend Railway THUNDERSLEY Tank Locomotive. The scans below show the 8 sheets in (i) Cyan, (ii) Magenta, (iii) Cyan + Magenta, (iv) Yellow, (v) Cyan + Magenta + Yellow, (vi) Black, (vii) Cyan + Magenta + Yellow + Black and (viii) Finished Perforated Sheet.