2 Silbergroschen vivid Prussian blue, fully to broadly margined cut cabinet piece as a postal franking on a folded letter from Braunschweig to Verl in the Kingdom of Prussia, the stamp was cancelled with a blue two-circle postmark "Braunschweig 21 / 8", due to the types of railway postmarks on the back, the letter can be dated to the year 1852, photo certificate Dr. Hans Wilderbeek BPP (2024), Michel 1. 000.-