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Continue to ChatStaffa 1974 Highland Military (8v, ½p to 20p, CTO) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-offshore-islands/staffa/staffa-1974-highland-military-8v-%c2%bdp-20p-cto/
Staffa 1974 Highland Military (8v, ½p to 20p, CTO) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-offshore-islands/staffa/staffa-1974-highland-military-8v-%c2%bdp-20p-cto/