Curbed BuildingSpotter: No. 39

We were so stuffed to the gills yesterday, there wasn't much time to toss a BuildingSpotter your way. But today? Early in the wee hours, Will Femia, that unstoppable downtown photoblogger from the tongue-in-cheek nabe known as NoBat, posts the dingy yet dazzling photo you see above. Locate this shot, if you can, in the comments. (As before, the "39" may or may not have anything to do with the building's street number.)
· 39 [A Test of Will]