RSA

Set to 3 different clues across 3 published puzzles, most often “Cape Town's home: Abbr.” — The New York Times, Sunday, 11 April 2010.

3 letters

Every clue on record, most used first

Cape Town's home: Abbr.once
The New York Times — Sunday, 11 April 2010
Cape Town's country: Abbr.once
The New York Times — Wednesday, 26 September 2007
Mandela's land: Abbr.once
The New York Times — Friday, 8 August 1997