Printing Matrix, Midland Railway, Engraved Steel depicting WYVERN. "Midland Railway Coupon" (correct). Printing Matrix, Midland Railway
Linofilm photosetter matrix grid, serial number 1890-0-26266, 1950-1976. The characters are inscribed onto a glass plate and the matrix remains stationary during the printing process. Matrix grid for Linofilm 505 photosetter, 1950-1976 1950-1976