You are buying 2 pieces of  4 1/4" Ceramic Tile Surface or Thinset type Bullnose . Symbol S4449. Bullnose on one edge. American Olean AO color number 23 Pink Blush. Measures 4 1/4" square. New old stock, never used. Made in USA , from 1950s until it it was discontinued in 1980s.

Numbers on back have absolutely nothing to do with color, they are from the blank bisque before glazing.

Thanks for looking, email any questions.

Also have various trim pieces in this color.

Combined shipping if buying more than 1 set.

USA shipping only

Daltile Mohawk Dal tile Lansdale National Gypsum Armstrong 23