Julia Orwell:
I've seen that $50 in a number of Watchtowers these last few years. I assumed the Australian wt would have our $50, the American ones would have their $50. the Japanese their equivalent of $50 and so on and so forth so it was an amount all JWs could identify the large amount.
There is only one English version of the Watch Tower. There isn't a separate image for Australia. Whilst it's true that images in JW magazines are sometimes different for different languages (e.g. certain language editions depict people primarily of the target ethnicity rather than white people*), there is no country-specific targeting in editions of the same language. (And they always use so-called 'US English' instead of proper English.)
*Compare the English and Ewe covers of the January 2014 Watchtower:
Phizzy:
That picture will have the subliminal effect of making JW's feel guilty if they put in a smaller bill, or just a widows "coin of small value".
Only for readers who recognise it as AU$50 at all. There's no instrinsic meaning that will subliminally 'instruct' readers unfamilar with the currency to donate any particular amount, other than possibly that notes are preferred to coins. But that's kind of obvious anyway.