What is an equivalent wool to Patons Inca?

I searched and was unable to find Patons Camelot Wool. The best I can figure out is that you might be referring to Patons Kroy Socks FX in Camelot color. So, going by that thought, it would be a sock-weight yarn; or category 1 fingering weight yarn. Therefore having a ply of 4.

If I've totally misunderstood what yarn you're asking about, I've attached some URLs which might help you to translate the information you have on the yarnband into ply.