Need Help Identifying Speakers

I picked up a pair of speakers today that look identical to Kilpschorns I had nearly 25 years ago BUT on these speakers, the tops consist of Altec Lansing 806A drivers and Altec 811B sectoral horns with JBL2504 slot tweeter (each speaker is a mirror image with the slot tweeter mounted on the outer edge. I have not opened them to see what the bass woofer is but I did connect them to a small amp and I swear they sound much better than the Klipschorns I used to own. These sound is STUNNING. Are these one-offs? Has anyone seen corner horns like this before? I would really like to know. All I know is that the previous owner worked in movie production in Hollywood and may have custom built these himself; I am just not sure.

Here are links to the photos:
http://goo.gl/ZNL60
http://goo.gl/ecuwd
Any help would be greatly appreciated.