3, 00 Krb. Postal stamp, type I, properly franked single franking on registered letter with cancellation \"Dombrovicsa 4.11.41\" to Sarny with on the back arrival cancel \"Sarni a 6.11.41\", slight traces of use, photo expertize Krischke BPP: \"the letter is properly franked franked also used. Such commercially used letters are extremely rare. \", Michel 4.500.-