This looks like the really light weight stuff, which is 00 or "double ought", doesn't it? I don't think they made a 000 weight. Just as a review, I think the K&S stuff, (going from light to heavy) went 00,0, SGM and GM, didn't it? Sterling rubber powered models had the lightest weight silkspan in them instead of tissue paper. It didn't come in very large sheets. I have been off work for the last couple of weeks, and have been going through my stuff and I have all my tissue/silkspan stashed in one place now, and I'm fixed up pretty good so I can't se paying a buck a sheet for the light stuff. There has to be more out there, just hasn't been found yet.
Type at you later,
Dan McEntee