Those pictures aren't the best, but it looks like it's been blasted to me also. That linkage shaft wouldn't have a "satin" look to it if it was NOS. I have seen them go that much several times. I got mine for about $200 without linkage.
They made a more "normal" intake also, which I have only seen once before (on Ebay). I'm thinking the "normal" one is probably rarer than the art deco one. The deco Thickstun and the dual Tattersfield are probably the best looking intakes ever made.