This is a rubber stamp "set of peonies" by always smile... , a Japanese stamp artist who produces stamps of plants, antique goods, and interior decorations.
The stamps are very delicate, and the idea of how to stamp them is very impressive.
You can use these stamps in combination with various other stamps to create gorgeous designs for plain envelopes, wrapping paper, and message cards.

*Set of two, one white and one black.

Imprint Size
White: 20mm x19.5 mm
Black: 15mm x14 mm