Fatto matematico: 1055 is the maximum value of n so that there exist 5 denominations of stamps so that every postage from 1 to n can be paid for with at most 10 stamps.
Trivia: 1055 is a boring number.
Data storica: November 20th is the day in 1407 that a truce between John the Fearless, Duke of Burgundy and Louis of Valois, Duke of Orléans is agreed under the auspices of John, Duke of Berry.