"...for superiority of temper stands preeminent to all others manufactured." Sounds perfectly reasonable when you think about it!
That is a very interesting razor, for I don't know that it is correct to call it a faux anything. Most frame back models had a frame the same thickness all the way back to the pivot, and it would surely be an easier way to make even a faux one. So the name on the scales seems an odd one to choose, and yet Manah's link precludes the possibility that you have a non-authentic composite.
Most wedge razors are, in fact, slightly concave, and while I don't think grinding this directly from the diameter of the stone was the only way of doing this, it seems by far the most likely. True hollow-ground razors of a slightly later period were undoubtedly done on a much smaller-diameter stone. It couldn't have been a simple matter to change, in the days when a single shaft ran the length of the factory. For the smaller wheel would have had to rotate much faster if metal removal wasn't to be very slow. Existing systems of pulleys and bearings mightn't have been up to it, and a water-bath would have had to be higher up.
Your razor looks like an attempt to produce the advantages of a hollow-ground blade (chiefly the minimal amount of metal removal required to hone it) before the small-wheel setup was available. It is actually very similar to a blade I am restoring, the "Superior Concave", and to one on the SRP database.
Wade & Butcher "Full Concave Fine India Steel" 7/8 - Straight Razor Place Wiki
The database scribes it to 1830-37. These, and I think yours, were made by lengthwise grinding, as they are hollow (below the spine) with a curvature which increases near the back. The big question has to be, why change to that inconvenient little nobble at the end of the thinner shank? Maybe they had the die for stamping horn or whalebone, and that inscription seemed too splendid to stop using.