2 Sgr. Vivid Prussian blue, centric cancellation blue two ring cancel \"WOLFENBÜTTEL 18 / 11\", on all sides wide to enormous margins, at the bottom even with small part of the neighbour, very having bright colours outstanding quality, expertized Lange and new photo expertize Dr. Wilderbeek BPP (2020) \"stamp and postmark are genuine. The quality is perfect. \"