J.W. Benson. A rare and interesting brass inking chronograph deck watch with centre seconds and box

J.W. Benson. A rare and interesting brass inking chronograph deck watch with centre seconds and box
Signed J.W. Benson, Ludgate Hill, London, circa 1900
Mechanical movement, plain three-arm balance, 12 jewels, silvered dial, Roman numerals, blued steel spade hands, central blued steel inking hand outer Arabic five minute divisions and scale calibrated for 300 units, set in large circular brass bowl, snap on back, the inking device operated by brass button in the band dropping dot of ink at the desired time, connected to a push-button of the outer mahogany box, dial signed
212 mm. square & 128 mm. height