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Continue to ChatSteep Holm 1980 Kenneth Allsop (18p - single value, U/M) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-offshore-islands/steep-holm/steep-holm-1980-kenneth-allsop-18p-single-value-u-m/
Steep Holm 1980 Kenneth Allsop (18p - single value, U/M) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-offshore-islands/steep-holm/steep-holm-1980-kenneth-allsop-18p-single-value-u-m/