LNER A3: ID no. 283739209109. LNER A4: ID no. 283402273634. LNER A4 (1930’s) : ID no. 283280234976. LNER 1930’s headboards: ID No. 283742008535 Soon to be discontinued. Builders plates: ID no. 283999422205 Industrial, LNER, GWR, LMS and BR builders Plates.