Whoa, these are awesome. This is the molded ply block equivalent of a box full of nothing but Crunch Berries. Normally you'd have to buy twenty Creative Playthings Airfield Sets to get this many air hangar-shaped blocks, and even then, they've all got windsocks stuck in their roofs.
20-piece Bentwood Block Set, $79 [whitneybros.com]
Nice find. Maybe even more awesome than the OGs, Creative Playthings' plywood arches.