Double Bass Mystery Strings to ID

[Twocan]

I recently purchased a “used - not opened” set of D’Addario NS Traditionals for my NS NXTa 5 string EUB. To my surprise, the box was full of used strings that were repackaged.

The strings (B, E, A, D, G) all have black silk at both ends and a black hollow ball at the end. Any idea what these are?

 

[Francois Blais]

As far as I know, these strings should follow the same color coding as their DB counterpart.
Which means blue silk with a yellow stripe at the ball-end.
At the tuner end:
E = green
A = black
D = yellow
G = red
In other words, you got burned, I'm sorry!

 

[Twocan]

Understood (my money was refunded)! I just want to know what kind of strings these are that I received.

 

[EdwardofHuncote]

It may have been an honest mistake. A common practice is to wind old strings up and put them in the package new strings came in. I do this for customers all the time in my shop, but I usually mark the package with a date and some info on a piece of masking tape.

Sorry, no help on the old ones. They're pretty random looking. Not especially good.