From that wonderful website - http://www.howstat.com
South Africa lost the Sydney Test after declaring both their innings - the second nation in Test annals to lose a Test match after declaring both their innings. In March 1968, West Indies had lost the Port of Spain Test against England (404 + 215/3) by 7 wickets after declaring in both their innings - 526 for 7 declared and 92 for 2 declared.