1 Rouble "red army" with green overprint "VILNIUS" with overprint error IV "notch left above in the L" (analogous Michel-no. 17 - by Michel-no. 18 not listed) along with 5 Kop. till 80 Kop. postal stamps with overprint "VILNIUS" on postal not transported envelope with stamps set with cancellation "VILNIUS C e 31. 8. 41", very rare with the so far not on of this denomination value listed overprint error, detailed photo expertize Thilo Nagler VP (2017) : "genuine and immaculate. ", Michel for standard rate 1. 500.- (regardless of of the overprint errors)