Where's the source? All you wrote was 'source'...
But it doesn't look like limestone. If the shift from limestone to concrete wasn't noticeable, then why did half of SSC pick up on the change the second they started placing the concrete panels? The two are not the same and there's definitely something dishonest about Silverstein advertising a limestone facade for a luxury building only to greet his tenants with 'look-alike second-class materials'.I think there's nothing wrong about a concrete facade. 432 Park and even 30 Park do have both great facades. If the concrete looks like limestone, it is alright in my book :cheers: