Height includes bottom tab.
The Aerotarg company, following an agreement by them with the Polish Ministry of Post & Telegraph, issued these stamps. It was agreed that in addition to the normal express postage rate, payable by the use of normal Polish stamps, there would be an additional payment for airmail, payable by the use of the Aerotarg stamps.
Below each stamp was an advertising label, inscribed T.A.B.R.O.M.I.K., for a vodka factory TAdeusz BROnislaw MIKolajczyk who provided the labels free of charge.
