Fatto matematico: 1475 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 11 stamps.
Trivia: 1475 is a boring number.
Data storica: January 14th is the day in 1343 that Arnošt of Pardubice becomes the last bishop of Prague and, subsequently, the first Archbishop of Prague.