Otto Natzler
...that ceramics expert Otto Natzler perfected over 2,000 colours and styles of glazes?
...that <a class="mw-redirect" href="./Ceramics" id="mwAcs" rel="mw:WikiLink" title="Ceramics">ceramics</a> expert <b id="mwAcw"><a href="./Otto_Natzler" id="mwAc0" rel="mw:WikiLink" title="Otto Natzler">Otto Natzler</a></b> perfected over 2,000 colours and styles of <a href="./Ceramic_glaze" id="mwAc4" rel="mw:WikiLink" title="Ceramic glaze">glazes</a>?