mint
... that there is only one surviving example of a coin struck at the Anglo-Saxon mint at Horndon-on-the-Hill?
... that there is only one surviving example of a coin <a href="./Coining_(mint)" id="mwCDo" rel="mw:WikiLink" title="Coining (mint)">struck</a> at the <a class="mw-redirect" href="./Anglo-Saxon" id="mwCDs" rel="mw:WikiLink" title="Anglo-Saxon">Anglo-Saxon</a> <b id="mwCDw"><a href="./Horndon_mint" id="mwCD0" rel="mw:WikiLink" title="Horndon mint">mint</a></b> at <a href="./Horndon-on-the-Hill" id="mwCD4" rel="mw:WikiLink" title="Horndon-on-the-Hill">Horndon-on-the-Hill</a>?