Dieter Bortfeldt
... that Dieter Bortfeldt, an expert in detecting forged stamps, won 15 gold medals for his displays of the philately of Colombia?
... that <b id="mwBFI"><a href="./Dieter_Bortfeldt" id="mwBFM" rel="mw:WikiLink" title="Dieter Bortfeldt">Dieter Bortfeldt</a></b>, an expert in detecting <a href="./Philatelic_fakes_and_forgeries" id="mwBFQ" rel="mw:WikiLink" title="Philatelic fakes and forgeries">forged stamps</a>, won 15 gold medals for his displays of the <a href="./Postage_stamps_and_postal_history_of_Colombia" id="mwBFU" rel="mw:WikiLink" title="Postage stamps and postal history of Colombia">philately of Colombia</a>?