Jacobite Era Coat on display at NMS

[Luke MacGillie]

It reminds me very much of the type of coats that became common in the 1750's here in North America among rangers and Light Infantry, which, IMHO had its genus in Sporting wear of the period.......

There is also a good bit of documentation that that style of coat was worn by the 77th from its standing up in 57, and by the 42nd from 62 to 68. See the painting of John Campbell of Melfort for one with slightly longer lapels, but with the 3 button closure below the lapels.