Sinn Watch 356 Pilot Classic W Leather 356.0201 Leather. Unlike the timepiece in the beginning, the 356 PILOT Classic AS E and 356 PILOT Classic W are equipped with a special complication. This refers to the bicompax arrangement of the black, electroplated matt silk counters. As an appreciative expression of 25 steadfast years, Sinn have enhanced the dials at six o clock with the unmistakable lettering FLIEGER KLASSIK, which is also a novelty in this series.