SIGMAS
Set to 2 different clues across 2 published puzzles, most often “Summation signs” — The New York Times, Wednesday, 30 January 2008.
6 letters
Every clue on record, most used first
- Summation signsonce
The New York Times — Wednesday, 30 January 2008
- Letters from Greeceonce
The New York Times — Friday, 20 November 1998