Answer: sovereign

AnswerCrossword Clue
SOVEREIGNPotentate.
SOVEREIGNElizabeth II.
SOVEREIGNCoin of England
SOVEREIGNFormer British coin
sovereignA supreme ruler, esp. a monarch
sovereignsupreme also SOVRAN / in pre-decimal coinage, a coin worth one pound sterling
sovereignA former British gold coin worth one pound sterling, now only minted for commemorative purposes