On the 11 August 1884 Billy Murdoch (211) and Tup Scott (102) scored the first double century partnership in Test cricket playing for Australia in the 3rd test v England in London.
Their partnership yielded 207 runs and Australia scored 551 runs in the first innings off 311 overs.
England were bowled out for 346 off 198 overs in their first innings and were 2 for 86 off 26 over and the match was drawn.
The test match was a 3-day test match from 11 -13 August 1884. Declarations were not permitted in test cricket until 1889.

https://www.espncricinfo.com/series/australia-tour-of-england-1884-61343/england-vs-australia-3rd-test-62411/full-scorecard