Well, this should be a challenge as I have no pictures.

2 blade wooden propeller with the following approximate dimensions:
9 feet length, maximum blade width of 27cm.

The hub has these markings:

RAAF Randwick
130 HP
DRG 512

The size precludes something modern such as a 130 hp Cirrus motor but could be appropriate for a 130 Clerget. Anyone solve this riddle?