ITALY. Pisa. Republic, 1150-1312. Mezzo grosso (Silver, 20.5 mm, 1.78 g, 7 h), struck in the name of Frederik I. +FR IMP-RATOR Eagle standing to left on column capital. Rev. PI-SE The Virgin seated facing, holding the Holy Infant; star and crescent above. Biaggi 1936. Scarce. Nearly very fine.