To my knowledge, Hurlbert didn't produce a wrap with light green specks that resembled Cortland. Blue Mountain did (and does), but it does not quite have the evenness of the specks in the ebay photo. I assume that's what you're referring to.
I've shown you a picture of new Cortland wrap. You don't have to take my word for it. Jerry Rauenzahn will vouch for it, as it's the first Mosconi tribute cue he did, before all the Bushka contests, etc. He had something like a pound of it; I'm not sure how much of a spool that would be. And no, it's not the nylon/dacron white with green speck that you may be referring to. It's real linen in my photo, in case that's what you're referring to.
The truth is as well, Jerry did mention to me that his spool of Cortland did look whiter than what he saw from the Pechaeurs' when they bought the stock from the company. Jerry mentioned theirs did look somewhat more "yellowed," which indicates that method of storage may have something to do with the appearance of the linen, even unused. Tim Scruggs also told me the same thing; he had a spool of Cortland that yellowed over time in the 80s as it sat in the shop. So, examples you've seen may have been sitting around a while as they aged.
Bottom line though, when you think Tim (skins) and I don't know Cortland when we see it, you are mistaken. I've been in the hobby since 1970, and Tim's experience in the cue business speaks for itself. Cortland fresh out of the box does start out very white with the light green specks; I can post all the pictures of Jerry -R-'s cue that you want; it's the real stuff. I respect your work, but I don't recall you using Cortland on your cues, but photos would help.
All the best,
WW