usually composed of 25 to 50 members and it focuses in collecting and distributing both coins and banknotes from Puerto Rico to interested collectors. An annual exhibition along the Sociedad Filatelica de Puerto Rico (lit. "Philatelic Society of Puerto Rico") has been held in Plaza Las Américas since the commercial center's inauguration. Outside of this activity, Puerto Rican currency can be found locally in philatelic and numismatic as well as flea markets. At auctions, banknotes have been known to surpass bid that are up to 70,000 dollars. The collection of cardboard samples given by banks to numismatic merchants, has also been noted among enthusiasts. Other issued currency In 2005, the Puerto Rican Nationalist Party issued a limited amount of banknotes commemorating the Jayuya Uprising. The series included pesos of six denominations, including $1, $5, $10, $20, $50 and $100 bills. The designs of all banknotes feature Pedro Albizu Campos in the front side while the reverses are adorned with the flags of Puerto Rico, Jayuya and the Nationalist Party. Microprint with the names of Pedro Albizu Campos and Filiberto Ojeda Ríos are found throughout the pesos. On July 10, 2005, Liberty Dollar of Puerto Rico was created by Alfredo Pacheco Martínez. Silver ounces began circulating on October 8, 2005, marking the first time that a silver coin was distributed in more than a century. After an intervention with parent company Liberty Services concluded with its assets being confiscated, leading to a process that resulted in the indictment and conviction of founder Bernard von NotHaus, Pacheco Martínez continued to circulate the coins under the name of Dólar Boricua. In August 2010, he was also indicted on the same charges faced by Von NotHaus. Pacheco Martínez was found guilty on June 29, 2012, being subsequently sentenced to 19 years in prison. In December 2007, the United States Congress approved a measure that included the Commonwealth of Puerto Rico, Washington D.C. and several non-autonomous territories including American Samoa, Guam and the United States Virgin Islands in the 50 State Quarters program. Both commonwealths and territories were excluded from the original program approved in 1998, which was followed by almost ten years of lobbying before they were included. The design on these coins was expected to feature the same George Washington image found in the obverse of the original issues, while the reverse would depict illustrations of something characteristic to that location. The Secretary