Altim, I thought and still think that the expression of one arm , not serious . Different artists have written at different times in different ways, experimenting , and there is work and periud where it is impossible to determine this. One artist , but the March 2 or 10 hands , and the more hands the more serious artist. On one or more hands can be judged only one who is very familiar with the work of an artist over the years.
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