Penny Black print run was 286,700 sheets, containing a total of 68,808,000 stamps. Many were saved, and in used condition they remain readily available to stamp collectors. The only known complete sheets of the Penny Black are owned by the British Postal Museum. In addition to the general issue of the Penny Black, a similar stamp intended for official mail was produced, with the letters "V" and "R" replacing the crosses in the top corners. Because the general public quickly accepted the postage stamps and ridiculed the Mulready stationery produced at the same time, vast supplies of Mulready letter sheets were given
Rob Penny considered Penny to be Wilson's mentor in those early days. Penny's hire, along with other non-traditionalists academics, such as the choreographer Bob Johnson were part of the push to infuse the Black Studies curriculum with a wholistic Black Aesthetic to correspond to an advanced exploration of Black academics that Porter, in particular, thought should comprise Black Studies. After Penny began teaching at the University of Pittsburgh , he was promoted to associate professor in 1971 under the leadership of Porter. His tenure established a foothold for the increased production of his art. Penny, moved on to serve as chair of