A Lazio Majolica tray with Hammer and Anvil. Viterbo (?) 40 cm diameter

A Lazio majolica tray with hammer and anvil.
Viterbo area?
A large tray 40 cm in diameter, with a shield in the center with ribbons, letters and a hammer and anvil in the centre.
The capital letters "C" and "A" could indicate a guild or fraternity.
On the brim there are semicircles that recall the sun or a flower with an orange and blue center that fades into antimony yellow on the outside.
Numerous imperfections, small chips on the edge.
A baking crack on the back.
The clear varnish has a slight iridescent essence similar to a metallic luster.