Who are the first opening pair that made 300 runs opening partnership in test cricket?

Question

Who are the first opening pair that made 300 runs opening partnership in test cricket?

Answer 1

d**n, Ben bet me to it

yea yea it was Jack Hobbs & Wilfred Rhodes on 9 February 1912

Answer 2

Jack Hobbs & Wilfred Rhodes on 9 February 1912

323 vs Australia

& that was the first ever partnership of over 300 for any wicket

Hobbs made 178

& Rhodes made 179

match scorecard

http://content-ind.cricinfo.com/statsgur...

edit:-

Vinoo Mankad-Pankaj Roy's was the first opening partnership of over 400, and 3rd time a opening pair made more than 300, (date 6 Jan 1956)

Len Hutton & Cyril Washbrook made 359 vs South Africa, that was the second instance  (date 27 Dec 1948)