Stockbroker pencils were made to accept leads of 4mm diameter and larger. They were used to mark pieces of paper which had to be visible across the trading floor.
Vintage Pencil Archive - Page 2
Ref. 494
Enamelled pencil, engine turned silver with opaque enamel overlay, additional spiral floral decoration to the barrel, ring top, no chips, scratches or damage, (very good). Sold