Which strings are these?

[st.bede]

I bought a used guitar and it came with strings from two different makers. I really dig how they are sounding and playing. The low string (E, A, D) are obviously D’Addario chromes, given that the ball end are color coded. I do not know what the high strings are. The have a purple thread.
Thank you.

[st.bede]

Wow... the unknown strings. The only strings I have found, that are similar, are ernnie ball cobalt bass strings. Did ernnie ball make flatwound strings for guitars at one point?

[nevershouldhavesoldit]

I think GHS use / used purple silk winding on some flat wound sets.

[st.bede]

Thank you nevershouldofsoldit. I am going to check that out.

[Craiguitar]

My La Bella 11-50 jazz flats have purple windings. The La Bella purple looks like a slightly darker purple though!