Estonian stamps
...that the first Estonian stamps were put into circulation in November 1918?
...that the first <b id="mwAUU"><a href="./Postage_stamps_and_postal_history_of_Estonia" id="mwAUY" rel="mw:WikiLink" title="Postage stamps and postal history of Estonia">Estonian stamps</a></b> <i id="mwAUc">(example pictured)</i> were put into circulation in November 1918?