first Belgian postage stamp series
... that the first Belgian postage stamp series depicted Leopold I wearing military uniform, with highly visible epaulettes?
... that the <b id="mwBDM"><a href="./Epaulettes_(stamp)" id="mwBDQ" rel="mw:WikiLink" title="Epaulettes (stamp)">first Belgian postage stamp series</a></b> depicted <a href="./Leopold_I_of_Belgium" id="mwBDU" rel="mw:WikiLink" title="Leopold I of Belgium">Leopold I</a> wearing military uniform, with highly visible epaulettes?