Check out ebay item 160165890841... Anyone ever see one of these? The electronics look like 12xx, but that mounting is strange...

VideoWall rear-projection unit, like this:
http://www.broadcaststore.com/store/prod_detail.cfm?eq_id=446353
And This:
http://www.cs.washington.edu/lab/facilities/videowall/

Extreme toe-in is probably fixed, lenses will not have seperate edge and center focus, and probably no sheimpflug... otherwise it's probably just a folded-in-half VPH-103x ot 105x.