Mint-made errors are called "type-2 blanks (or planchets)" after an upending mill adds uniform, rounded rims. Type-2 blanks may also be considered striking errors as they are prepared correctly, but are released without having been struck. A misfeed can occur when the metal strip is fed through the blanking machine. The punches sometimes overlap the leading edge of the metal producing a straight clip. Sometimes, the punches strike an area of the strip which overlaps the hole left by the previous strike producing a curved clip. Sometimes punches strike the irregular trailing edge of the metal strip producing irregular clips. Coins are
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