If any burgess, whether principal [party in a
plea] or pledge, sues a writ of error upon any record or
judgement given in the king's court here, and if the judgement is not
reversed at a higher level in the King's Bench, and [with
result that] a writ of execution is issued for the party
[to whom judgement was originally given], then he
who sued the writ of error shall pay a 40s. fine, half to the profit
of the town and the other half to the profit of the bailiffs.