Porcelana M. Siao Set of Four Blue & White Ashtray / Trinket Plates from Brazil

Description

Beautiful set of four ashtrays / trinket dishes made by Porcelana M. Siao - MG.  Each piece has a unique, hand painted blue and white finish.  The pieces measures 3-1/2" wide.
The pieces are in great condition.  There are no chips or cracks.  One of the dishes has a small defect at the edge, but I believe this to me a manufacturer's defect.  Please review the photos carefully.
Beautiful and unique art pottery pieces hand made in Brazil.
Porcelain Monte Siao is a company that specializes in the production of blue and white porcelain.
It was founded in 1959 in the city of Monte Siao in the southeastern state of Minas Gerais, Brazil.
Each piece is created by hand, from filling the molds with the liquid clay, the removal of the dry part from inside the molds and the cutting of the dough leftovers, to the application of the paint with a brush on the raw piece until finished with the enamel bath.
The piece is then cooked at 1300 degrees C for approximately 48 hours in a wood oven.
Another 48 hours are required for the oven to cool, enabling the parts to be removed.