1879 unsealed envelope to Livorno with a G.B. ½d, Plate 13, tied by a MALTA MY 28 79 ‘A25’ duplex cancel. Siracusa 30.5.79 and Livorno 1.6.79. transit and arrival cancels are on the back. The ½d paid an Unsealed Printed Matter rate. A very uncommon usage of a single ½d paying this rate. Fine.