Longren Binxian String Set 2

Below are the microscopic pictures for a second set of Longren Binxian strings I have had the chance to borrow. This set appears to be a bit more worn and scratched under the microscope. These also appear to be slightly different at the wrapping end of the string, and is currently not known whether this set is the newer or the older of the two sets. Tone-wise, I actually preferred the first set over this set – a harmonic comparison of the two data-sets would be an interesting case study subject.