RSA - 1975 Postal Mechanisation Sorting - 4c Automatic Sorting Scheme - Control Block of 10 - Unused with Control Numbers 697-700 and Sheet Number 949118-0.
Contains Gum but with Severe Perforation Folds and a Cut in Right Margin 
Stock Cards are Excluded
SACC 2023-25 edition catalogue value R1 each (SACC #390)