Hackney & Bolte Penny Post, 1886 (1¢) black on red. Tied by "Atlantic City, N.J., Jun 15, 1886" duplex postmark on 1885, 1¢ postal card to Philadelphia, Pa., receiving postmark at left, Very Fine, a rare usage of this short-lived 20th century private post. Scott No. 153L1+UX8  Estimate $500 - 750. $0 (Image)