receipt stamps the letter collection the Berlin local post, the research by virtue of from approximate 1827 to 1850 used as proof at an abandoned letter, possible for registered mailings, reverse small thin spot, all around full margins, centric cancellation with two ring cancel the local post "S. P. R. 8" and dated 14 / 4, the number handwritten modified from "793" on "125" and in the month indication of the stamp in handwritten supplemented "April", especially through the manual additives a utterly unusual piece, used extremely rare seen