2 Fr chamber of commerce dark violet brown on green sound unused without gum, as issued, expertized Pickenpack (double signature) and photo expertize Lothar Herbst VP "the condition is perfect. The dark "b" colour is only on field 10 in the sheet of ten in a very small part of issue and is therefore very rare. " (the stamp was at the time of certifying still as 2 b catalogued, now as 2 F. ) Michel 1.600.-