Pattern number hand-painted in Red: R472(5) cup R436(heart) saucer
Back-stamped in Black: Spode Copeland's China England
*Spode & Copeland Marks and other relevant intelligence, Robert Copeland, p. 68; p. 117. ; p. 121
"Bone china including stone china R1-R9999- c 1900-1927 Up to R750- c 1901"
According to the mentioned Copeland's reference book, this black back-stamp was listed as being used "about 1904-1954"; however, by the pattern number it is precisely listed between 1900 and 1901, and therefore, by several years it may demonstrate the earliest known use of this particular black back-stamp.
But in addition to the early use of this back-stamp and it's potential value as a collectible this is an early presentation of the *Art Deco form by SPODE .