1790 NORFOLK/'97 ATTLEBOROUGH' FIRST TYPE MILEAGE MARK (NK10). Fine entire Attleboro to 'George Burley Esqr. No. 8 Lincolns Inn New Square London' dated 5th Feb 1790, charged '5' on front light strike scarce '97 ATTLE/BOROUGH' first type mileage mark in black (NK10), used two years earlier than county cat. records. (Ref 91928).