Jeri, has there ever been any determination of what "Orange Smith may be? Did it turn out to be 'Archduke Charles'? I know at one time Caméléon (china, Flon, 1824) and Belle Isidore 1830 were being discussed.
No. There has been no discussion of which I am aware.
There are many Chinas that do this color shift, but these blooms are larger than most -- my guess is that it is a minor sport of 'Archduke Charles,' with a lower petal count. But I have no proof of that.
This rose came from next to the grave of Orange P. Smith (yes, that is his name). He died 6-20-1911, aged 84 years. He was a native of Illinois, and served as a private in the 6th U.S. Infantry (one assumes, in the War Between The States).