too late for burra bra. It could theoretically be bellubera,baragoola or north head. my bet is on baragoola but it was in conversion in 58 so not sure if it was still in service at this time. It is hard to tell because not many defining features are present.
There is a defining feature actually. Also a hint - it can only be Bellubera or Baragoola.
Another hint on the feature - if you are rather intimately familiar with Baragoola you can work out if it is her or not.
In other words, Nick and I know exactly which it is - but we'll see if anyone else can work it out.
... and one final hint - the bollards are the give away.