50 K. With printing on the Paper back and inverted overprint, from right margin of sheet (field 10), unused, without gum, as issued, issued only 25 pieces, photo expertize Mikulski, Michel 3.500.-

50 K. With printing on the Paper back, type II, and normal stamp 50 K. On piece, of the variety are only 25 stamps known, of it only 7 in type II, photo expertize Krischke BPP, Michel approximate 4.900.-

1, 50 Krb. Postal stamp, two values as properly franking on registered letter (centered folded), cancelled \"ROKITNO 198 XI1941 GK SARNY\" to Sarny with arrival postmark \"SARNI a 22 11 41\", the stamp in type I has at the bottom perforation fault and a crease attributable to the letter flap, the type II a small gum spot (caused by use), photo expertize Krischke BPP: \"it is a matter undoubted about a the extreme rarely and only in some copies received remained properly franked stamped also actual transported commercially used letters. The envelope war first as stamps free official letter used. From consignee is he then once again used become, what by the at that time conditions not unusual war. As well war first only one stamp as postage for a plain letter pasted up also stamped. After war the second stamp glued to, likewise single stamped and as registered letter with handwritten registered notation discharge and as such transported. The usable conservation of the letter is among others for that a proof. \"

1, 50 Krb. Postal stamp, type I, position 1, corner margin piece top left, used, photo expertize Robert Brunel VP (2023) : \"the condition is perfect. \" ; Michel 80.-+plus

1, 50 Krb. Postal stamp, cut, block of ten from margin of sheet, as well the types I (4), II (3), IV, V and X, unused without gum - as issued, scarce unit, expertized Zirath BPP, Michel approximate 1.885.- (free of premium for the possible type pairs)

3 Krb, type II, right lower corner of the sheet, unused without gum - as issued, with variety \"comma in lieu of dot to GK\" issued only 24 pieces, photo expertize Krischke BPP: \"genuine and immaculate\", Michel 1.575.-