| 摘要 |
This checker (1) is characterised by a rectangular laminar portion (2), and on one of the faces (3) there is a strip (4) which delimits a transparent surface (5) showing the numbers of the game in the same dimensions and in an identical arrangement to those of the boxes of the slip (6). The winning combination is marked on this checker, superposing it over the wagered boxes, the winning numbers are checked, and then the reference marks are erased so that it can be used again. <IMAGE>
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