Illustrated as Figure 5 in the Hackney & Bolte Penny Post article By Larry Lyons. Only 4 genuine Hackney & Bolte covers exist. 1c Black on Red, Die Cut, uncancelled, used with 2c Red Brown, tied by "Atlantic City N.J. Jun. 30, 1887 4 PM" duplex datestamp and cancel on locally-addressed cover, central vertical file fold, otherwise Fine, very rare genuine usage.