The guarantee is stamped on the back (see photo).
Here is a translation of the artist's statement on the back of the plate:
" THE PURIFICATION: I attempted to evoke the fear felt by Simeon, who represents the world in waiting, as Mary presented to him the accomplishment of the promise of a Savior. The candle held by Joseph symbolizes Christ as the light as presented in Simeon's famous prayer, 'A light for revelation to the nations, and for glory to your people Israel.'"