Rhodesia SG151 One Shilling Black and dull turquoise-blue

Rhodesia SG151 One Shilling Black and turquoise-blue RSC-G No Gash 11 (5) Position 2 showing Oval dot 8.7mm W of Queen level with right Pearl. Ex Mike Rolfe. (The RSC number is from the detailed listings which are available free of charge on the website. Ebay wont let me give a link but just search for the rhodesianstudycircle.)