Georgian Montgomeryshire Militia

[41st]

This is one of a few recent pick ups but this one seems to add a little more info than is included in Ripley & Darmanin.
Item 39 in R&D states that there is an “a” after the “M” for the militia element of the title. It also advises that there is no backmark.
The subject button shows no evidence of any “a” after the “M” and there is a backmark for William Williams which fits date wise for a late 18th C button.
Cofion gorau,
Kevin