They could be Innovation Braided, according to Bob Gollihur's string identification chart.
https://www.gollihurmusic.com/faq/57-STRINGS_STRING_IDENTIFICATION_CHART.html
Innovation are good strings, the Braided are an 'orchestral' string, optimised for Arco playing, which can make them a bit dull sounding & lacking in sustain for pizzicato. If the wrap is unravelling above the nut but still intact on the playable length, then I wouldn't worry too much, but if you want a brighter sound then you may want to look at a pizz/jazz string rather than orchestral.
Spiro wiech, Evah Pirazzi Welch (as mentioned above) and D'addario Zyex are all good places to start.