Dentistry on stamps.
Loevy
H T
HT
Kowitz
A
A
D002681:China; D003723:Dental Amalgam / Q000266:history*; D005060:Europe; D049672:History, 19th Century; D049690:History, Ancient; D010678:Philately; D012834:Silver; D014481:United States
D012834:Silver; D003723:Dental Amalgam