3 Groschen cut out of postal stationery, square cut, as a single franking on cover with blue two ring cancel "Oldenburg 8 / 1 8-1 N" to Berlin addressed, reverse delivery cancel from 10.1, signed Jakubek (handwritten), Pfenniger and Dr. Marx as well photo expertize Brettl BPP: "the right lower corner is slightly bevelled and left touched lightly. At three sides cut into. Reverse is the flap improper opened and to the conservation glued at the back. Having bright colors and otherwise faultless condition. The cancellation is good on the letter turning into. As postal stamps used postal stationery cut waren in Oldenburg official disallowed, but rather were on sufferance. There are to me only five covers this Oldenburg rarity known. " - very rare piece the Oldenburg philatelie!