Masaryk-Trauerblock with hand stamp overprint "we are free! Swastika" from Liberec, neat cancelled with pictoral hand cancel "Liberec 1 / -8. X. 19389 / . . . " on retroactive marked envelope, due to the small issue from only 40 copies is a souvenir sheet in this flawless condition very rare!, signed Dr. Dub and certificate with photograph Brunel VP (2014) : "the condition is perfect. ", Michel 6. 500.-