This yarn is a super fine (1), there is no information on the label regarding the worsted weight. I did take pictures of all the information on the label. I hope this helps. Not all yarn will list if it is a worsted weight. Sorry I couldn't be more helpful.
I can kind of see in the first pic now where it says super fine. That little yarn symbol is where it usually says the weight, and of it was worsted it would have a 4 there. I see the 1 now .
I can remember back in the day when yar just said 4 ply worsted weight, no the yarn is gotten complicated by being fine all the way up to bulky. And then some brands don't list weight or dye lot on the labels. I'm glad you found the photo.