<https://www.davidfeldman.com/fr/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.davidfeldman.com/fr/dfsa-ventes/2018-december-auction/indian-states/40055/bundi-1894-1-2a-slate-grey-used-on-a-small-native/>