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Continue to ChatFfestiniog Railway 1974 10p 150th Anniversary of Port Madoc Harbour (U/M) https://www.grahamlandstamps.co.uk/shop/stamps/cinderellas/gb-railway-letter-labels/ffestiniog-railway/ffestiniog-railway-1974-10p-150th-anniversary-of-port-madoc-harbour-u-m/