Thanks everyone for all the information!
Jim, in reference to- "By 1759, it is noted that it was ordered that swords issued to privates were to be 'lettered and numbered', ("Soldiers in America" Don Troiani), for example (in this case the Highland Regiment 42/A/35) thus
A=first company; 42=Highland Regiment; 35= private #35.
The first company battalions were letters A through K; the second K-Z (?)"
Would you be able to post a picture of this page? If that's not ok, could you possibly send it to me?
I found another reference in this Morphys auction of them being marked but it specifically mentions it being done in New York.
https://auctions.morphyauctions.com/...lot285996.aspx