Dapol 4F-072-025 7 Plank Wagon 9ft Wheelbase WY Craig Brynkinalt 29918 OO Gauge Dapol4F-072-0257 Plank Wagon 9ft WheelbaseWY Craig Brynkinalt 29918OO Gauge Prior to the standardisation of wagon design by the RCH in 1923 there were many variants available, depending on builder and region.