Description: Multi-piece construction, silver gilt with red, white, light blue and mid-tone blue enamels, maker marked "ALBERTI & Co. VIA No BIXIO 4 MILANO" on the reverse, centrepiece ring inscribed "SERVIZIO OSPEDALIERO DELLA SS. IMMACOLATA", 59 mm x 59 mm, vertical pinback, enamel repair evident on the centrepiece ring, very fine.