sumitomo-m awm

In tearing things apart I'm finding sumitomo-m awm it is flat and has fingers but the fingers are a silvery color. What should I do with these wires? Sell them on e-bay?

Thanks

there is a post that addresses that somewhere...check with easyrecycle

Are they worth something else? I always throw the flat wire in with my insulated #2 and the yard hasn't said anything?

Sorry I didn't see a thread anywhere else on this. I was just wondering because these seem to be more plastic than any thing else and I was unsure if they were copper or aluminum.