After rereading McIntosh's chapter "Super Fox" last night it became clear that this gun is nearly a prototypical HE. Tight chambers, bores and chokes and stock dimensions all in accord with the McIntosh's research. It was a delightful experience to have the gun in the shop and hopefully I will be able to do a story about it some day, I've certainly got the pix.
As for restoration, etc: it's up to the owner, and he is a sensible guy. But I would remind you that the major damage to the gun's bluing happened in a basement, not a duck blind.
We will see how it all shakes out.
Steve