Great shots, and pretty interesting glazing. I don't see notches for curtain wall clips, but then this is not typical window wall either, so I'd say we're looking at a hybrid system. Substantial mullions, but with floor-to-nearly-ceiling windows, a minimal number of them. Meanwhile, the spandrels, both the horizontal slab bands and the irregularly patterned vertical strips, look like they are translucent etched glass as opposed to typical opaque back-painted glass (with the occasional very darkly tinted glass).
That's looking not too shabby.
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