DCHP-1 Online
half-Johannes Obs. 
n. half a Portuguese Johannes, a gold coin worth about $8.00, in circulation during colonial days.
- 1772 The Public are caution'd to beware of receiving clipt and light Gold, chiefly in Half Johanneses, lately brought into this Province from New York.
- 1780 We also hear that several other robberies were committed the same week, particularly towards St. Roch, where a man had been stopp'd in the Street and robb'd of a half Johannes, another of two Dollars.
- 1772 The Public are caution'd to beware of receiving clipt and light Gold, chiefly in Half Johanneses, lately brought into this Province from New York.