An antique Italian micromosaic plaque titled "Lotta Impari" by Silvio Secchi circa 1930.
From the Mosaic Studio of the Vatican.
Gallery tag en verso reads:
Studio Del Mosaico
S.C. della Rev. Fabrica
S. Pietro in Vaticano
No. 4740 A
Plaque size: 19.75" x 14.75"