These figures are heavily converted LOD Enterprises 60 mm figures from it's British Infantry set. I picked the 59th Regiment as the unit was involved in the major actions in the Boston area in 1775. I also picked the 59th because the there are no reenactment units , nor modern illustrations of the 59th to call me wrong. ;)
The original figures had a LOT of problems.
They do have the light infantry "wings" . short coat, and the British tin canteen.
Pewter Light Infantry heads from a run of castings I had done years ago. (LOD Enterprises also makes a set of British Light Infantry with the caps)
Cast pewter Brown Bess muskets grafted to the figures.
I originally painted them all red to match LOD's plastic.
Recently I added the belly box ammunition pouches and painted the figures fully.