13 Conversion to be made according to the highest fiar price.U.K.
Provided always, that where there shall have been or shall be different rates of annual fiar prices for any county district or place struck in virtue of authority from the sheriff the said conversion from money into grain or victual, and from grain or victual into money, in all of the cases aforesaid, shall be made according to the highest annual fiar prices struck in virtue of authority from the sheriff for the said county, district or place.