Bath boxed 109 mileage

According to the British County Catalogue a boxed mileage mark, "BATH / 109" was in use between 1801 and 1804 - I only have a couple of examples from 1801 - 1802.  Here is a nice clean example from July 1801.

This second example, from January 1802, was franked by William Northey (called Wicked Billy by his family).

Here is a further example of the previous 1798-1802 handstamp, posted in June 1802, so the two handstamps were apparently to some degree used in parallel.