dating: Third quarter of the 19th Century provenance: Italy, One with coat of arms under crown and inscription 'SCUOLA DI MUSICA DELLA GUARDIA NAZIONALE'. On the reverse inscription 'SIVELLI STEFANO 1864'. The other with Minerva in helmet holding a shield and spear and placing her hand on a young man holding an object. Inscription 'SOLERTI IVVENTVTI MUNERANDAE'. In the exergue 'ACADEMIA ATESTINA'. On the reverse 'ANNO'. diameter 4 - 4.1 cm.