A variant U.S. Model 1858 engineer officer's Hardee hat
Fine quality private purchase felt hat with tall oval top, the crown pierced with central air vent; black silk ribbon; brim narrower than the standard Hardee hat, the edge bound with black tape; fitted with gold bullion officer's cap cords and engineer officer's insignia. Tan leather sweatband; blue silk lining retaining much of the gilt-stamped maker's label for Sullender & Pascal of Philadelphia.
Condition: Excellent. The felt faded to a grey/green color. Sweatband partially detached. Insignia possibly added or modified later, the engineer's 'castle' not attached.