Need to ask about a lot?

AUSTRIA - 1919 PROVISIONAL BISECT USED IN CZECHOSLOVAKIA (9 Jan) a commercial postcard addressed to Prag bearing a 1908-16 10h stamp tied by a TPO 'Tannwald - Reichenberg' cds postmark with a further manuscript '20' crayon mark for Postage Due hence a 1916 40h was Bisected in half and used as 20h (Scott J55a) tied by a 'Praha 1 / Prag 1' cds cancel. A wonderful item and scarce.