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Continue to ChatFfestiniog Railway 1975 150th Anniversary of Stockton & Darlington Railway (3v, 5p to 15p, U/M) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-railway-letter-labels/ffestiniog-railway/ffestiniog-railway-1975-15p-150th-anniversary-of-stockton-darlington-railway-u-m/