Under-franked cover: 1 Sgr. red together with handwritten notation "passes not"! On about 2 Sgr. under-franked cover from Hanoverian HANKENSBÜTTEL 16. 4. (67) (blue two ring cancel) in that Thurn & Taxis area to Dudenhausen by Alverdissen, reverse on route passing cancellation "Bückeburg railway station" and arrival postmark "Alverdissen 18 / 4" as well nice black varnish seal (complete), the document whitens defects on, the franking is in in fact good commercially used condition, detailed certificate with photograph Flemming BPP (2012) : "very rarely article of mail. "