Beautiful job you did on this. Old ones have a lot of character.
I also have the same question about the machine quilting over hand quilting, to maintain the integrity of the original piece.
I have a top that was entirely hand pieced and appliqued in the 1920's to early 1930's with miniscule hand stitching
I recently showed it to another quilter, and was told it needed to be hand quilted.
In that case, I may well be 100 as well, before it is ever completed!