String ID - rotos?

[T-Bay]

My recently acquired Gibson came with a new set of strings and I am more than happy with the sound so want to get a spare set. The seller has not replied to requests for info so I am trying to ID them. They are roundwound. There are no visible cotton/ silk/ windings and the ball ends are red, blue, white and red E-G. I think they are rotosounds but would be interested to know which type. Is there any way of finding out?

[Green Alsatian]

They sound like Rotosound Rotobass strings - no silks, but carry the red/white/blue ball ends of other Rotosound strings.

http://www.rotosound.com/rotobass/

[T-Bay]

Forgot to say they are nickel so the rorobass sounds like a good shout.

[T-Bay]

Just had a look and they are seriously cheap. Are they the same as the RS Jazz but without the silk winding?

[Thunderbird]

Sounds like there Rotosound RB45s to me

[Telebass]

[quote name='T-Bay' timestamp='1500236420' post='3336419']
Just had a look and they are seriously cheap. Are they the same as the RS Jazz but without the silk winding?
[/quote]
They're RS66 nickels with no silks.