1865 - 20 on 15c blue, horseshoe 2nd type with fou

 1865 - 20 on 15c blue, horseshoe 2nd type with four-point cancellation, block of six from 'SALERNO 3 SET.' (66 – dotted numeral cancel). Largest known multiple on cover. Cert. E.Diena: 'the block is perfect' (vertical filing fold running between the lower pair and the vertical block of four) (Sassone 24 – Euro 60,000)