<P> On February 12, 1959, a revised reverse design was introduced as part of the 150th anniversary of Lincoln's birth . No formal competition was held . Frank Gasparro, then Assistant Engraver at the Philadelphia Mint, prepared the winning entry, selected from a group of 23 models that the engraving staff at the Mint had been asked to present for consideration . Again, only the approval of the Secretary of the Treasury was necessary to make the change because the design had been in use for more than the required 25 years . The imposing marble Lincoln Memorial provides the central motif, with the legends E Pluribus Unum and UNITED STATES OF AMERICA completing the design, together with the denomination . The initials "FG" appear on the right, near the shrubbery . </P> <P> The Presidential $1 Coin Act of 2005 required that the cent's reverse be redesigned in 2009 . This resulted in the mintage of four different coins showing scenes from Abraham Lincoln's life in honor of the bicentennial of his birth . </P> <P> These four designs, unveiled September 22, 2008 at a ceremony held at the Lincoln Memorial on the National Mall in Washington, D.C., are: </P> <Ul> <Li> Birth and early childhood in Kentucky: this design features a log cabin and Lincoln's birth year 1809 . It was designed by Richard Masters and sculpted by Jim Licaretz . This cent was released into circulation on Lincoln's 200th birthday, February 12, 2009, at a special ceremony at LaRue County High School in Hodgenville, Kentucky, Lincoln's birthplace . The mintage was extremely low compared to prior years (see Lincoln cent mintage figures). It has been nicknamed the "Log Cabin Penny". </Li> <Li> Formative years in Indiana: this design features a young Lincoln reading while taking a break from rail splitting . It was designed and sculpted by Charles Vickers . Nicknamed the "Indiana Penny", it was released on May 14, 2009 . </Li> <Li> Professional life in Illinois: this design features a young professional Lincoln standing before the Springfield Illinois State Capitol . It was designed by Joel Iskowitz and sculpted by Don Everhart . Nicknamed the "Illinois Penny", it was released on August 13, 2009 . </Li> <Li> Presidency in Washington, D.C.: this design features the half - completed Capitol dome . It was designed by Susan Gamble and sculpted by Joseph Menna . This fourth cent was released to the public on November 12, 2009 . U.S. Mint released collector's sets containing this design in copper prior to the public launch of this design in zinc . </Li> </Ul>

How much does a roll of pennys weigh