This is the first example (I think) of Bacci producing a wall plaque. I don’t know how it would have been finished
More info on Bacci can be found here
Wall ornament by Bacci – Reg 904898
The site for everything to know about DURON, Paoli, Nieri and Bacci vintage african black chalkware / gypsum sculptures and figurines made in the 1950s and 1960s
1950s vintage chalkware statues 