What a fascinating question, Ian.
What a great piece of memorabilia too!

Bottle Openers were, even back then, standard give-aways.
My interest was more with associating the promo piece with
cricket.

The TROVE database offers no answer.
But general searches show why history is so fascinating.

I mean, today's 'Samboy' chips have a connection ...
http://australianfoodtimeline.com.au/colvan-chips/

And the beautiful Art Deco factory is significant:-
http://fitzroyalty.net/2010/01/19/f...ine-factory-to-aboriginal-housing-board/

The explanation of the bottle opener is probably lost.
But the evidence suggests the founder was sports mad.

Cheers
-----------------
Jack