The initial issue of these Scottish Units was annexed into the English Proclamation of coinage of the 16th November 1604, and an "exchange rate" can clearly be seen demonstrated of 12 Scottish pounds to one English Pound of Twenty Shilling. This is the second issue where the reverse design was altered to feature the Scottish lion twice in first and fourth quarters.
The Latin legends translate as on the obverse "James the Sixth, by the grace of God, King of Great Britain, France and Ireland" and on the reverse "I will make them one nation."