DCX
Set to 2 different clues across 2 published puzzles, most often “Early seventh-century year” — The New York Times, Wednesday, 24 March 2010.
3 letters
Every clue on record, most used first
- Early seventh-century yearonce
The New York Times — Wednesday, 24 March 2010
- Year in which Muhammad began preaching in Meccaonce
The New York Times — Saturday, 26 October 2002