From a really old philosophy book, the printer's mark for William Pickering. If I remember right, the dolphin and anchor mark originated with the Italian printer Aldus Manutus (Aldo Manzetti), a AD printer of classical texts.
Partisan | Flemish | The Met Date:ca. 1525 Culture:Flemish Medium:Steel, wood Dimensions:L. 70 1/2 in. (179.1 cm); L. of head 24 in. (61 cm); W. 9 1/2 in. (24.1 cm); Wt. 5 lbs. 15.1 oz. (2696 g) Classification:Shafted Weapons Credit Line:Gift of William H. Riggs, 1913 Accession Number:14.25.91