А почему 10?
наверное потому что круть по 10 бальной оценке.Потом круче только Прайвет Сток
... и добавил:А если серьёзно то What is a 10 top?
A very small percent of the maple trees cut in North America are actually figured. To make "10-Top" status, a PRS top must have clearly defined figure across its entire top with no "dead" spots. A guitar designated as a 10-Top will usually have a small "10" written on the back of the headstock in the upper right corner. Some of our earlier guitars have the "10" stamped into the finish in the same position.