Spence reprised her role as Celia in 2005 for the serial 's 4000th episode based around Alf Stewart 's ( Ray Meagher ) 60th birthday .
Spence reprised her role as Celia in 2000 and 2002 . 
 In 2005 she returned for the serial 's 4000th episode based around Alf Stewart 's ( Ray Meagher ) 60th birthday .