It's hard to tell from those photos. It's definitely not exactly the same as what's in my car. Looks like it'd probably work.
I don't have a photo of what I have, surprisingly, but here are photos of the new gauge guts/face that need a housing/lens:
Also, I gotta thank
http://www.BuickFarm.net for hooking me up. They've got a crapload of NOS parts and Doug, after I explained why I wanted a non-matching part, sent me those photos so I could use them to guess if it would work or not. It wasn't long afterwards that I had the item in my possession.
Any thoughts?