Latin legends translates:

Obverse - "James by the Grace of God, King of Great Britain, France and Ireland"

Fifth crowned half-length armoured figure, holding orb and sceptre, surrounded by beaded circles and legend, initial mark tun (1615-16), .IACOBVS. D;G; MA; BRI; FRA; ET. HI; REX., 

Reverse - "I will make them one Nation," a legend that is exclusive to this reign.

Crowned quartered shield of arms, I to left, R to right, .FACIAM. EOS. IN. GENTEM. VNAM.,