I couldn't find anything about these socks on Lolibrary. As far as I can tell they're unused and I've never worn them. They're black UTKs with a yellow-gold scalloped top and the motifs of tea, cake, and a cute little bear on the side. I can't say anything definitive, but they're most likely from 2006-2010. 

I live in a non-smoking household and have pets.