Type: Mark
Location: Underside, center
Inscription: ".CURTISS" stamped, in a smooth edged circle. Raised arched line follows beneath the name then past letters to the outside edge of the circle. The center of the circle contains a shield shaped, double handled vase. The lower portion of the mark is slightly effaced.
Type: Mark
Location: Underside, center
Inscription: "[ ]URTISS" stamped, in a smooth edged circle. Raised arched line follows beneath the name then past letters to the outside edge of the circle. The center of the circle contains a shield shaped, double handled vase. The lower portion of the mark is partly effaced.