Penny Lilac of the Penny Lilac was adapted from that used for revenue stamps in Britain from the early 1860s. In that respect it represented a break with 40 years of tradition in postage stamp design. Its predecessors (the Penny Black, the Penny Red and the Penny Venetian Red) all had rectangular designs. The use of the colour lilac for low value definitives was extended in 1884 when other low-value stamps were issued in lilac, with green then being used for higher-value stamps. The Penny Lilac was a surface-printed stamp and was issued in two forms: Penny Lilac stamps are often found
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