This sculpture on the premier étage appears to be arranging the garland of flowers.  
Her companion on the other side of the balcony is striking a slightly different pose.

The building was constructed in 1909 by Adolphe Cherioux 
and the two caryatids by sculptor E. Chenevière.
Many of the buildings will have a date and some additional information.  
You just have to look for that detail.

39, rue Saint-Sabin
75011 Paris