M part of the problem with these old catalogs are they are illustrated not photographs. I have the Pairpoint 1894 catalog & while the liiustrations are very well done when compared with the actual piece its just not the same as a photo. The lamp catalog is actually has hand colored illustrations. I too did notice the "shade form" , but auction companies are rather notorious for being creative, but thats why I contacted my Boston connection. Personally while I had never seen these shades before, he said you can find them on multiple lamp manufacturers products around 1910-1915 so they are early, its just manufacturer is not known.