Dentistry on stamps.
D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049673:History, 20th Century; D049691:History, Medieval; D007569:Jaw Abnormalities / Q000235:genetics*; D010678:Philately / Q000266:history*; D013030:Spain; D014071:Tooth Abnormalities / Q000235:genetics*