Mint-made errors 5 centavos. Foreign coins struck on a U.S coin planchet or vice versa are very uncommon and hold a high value. Authentic error coins should not be confused with coins that are damaged after being minted, which is known as post-mint damage (PMD) or post-strike damage (PSD). Mints purchase long strips of metal which are fed through blanking machines that punch out disks known as blank planchets (or simply as planchets or blanks) on which coins are struck. This determines the size and shape of eventual coins. The punched disks are first known as "type-1 blanks (or planchets)". The disks
Ten Easy Pieces (Bartók) the initial dedication is not numbered. It has an overall approximate duration of 17 minutes. The movement list is as follows: Bartók makes an extensive use of pentatonic scales, modes, novel harmonies and ostinato. All the pieces have a duration of about one or two minutes. Out of all 11 pieces, only three are based on folk tunes: numbers three, six and eight. The rest of the pieces were created in their entirety by Bartók, who used to make a great number of short pieces for piano using folk-like structures and melodies. The dedication uses material that he associated to