This is one of a series of display advertisements for the Imperial 70 standard typewriter which appeared in the Australian Women's Weekly in September 1963. Seriously, it's hard to believe that is more than half a century ago now. Still, it's almost embarrassing to think of ponchos as ever being "chic". Ponchos conjure a completely different memory for me, far removed from typewriters, but that's another story for another time (and perhaps another audience?). I don't recall boaters ever being chic, or oysters for that matter. Maybe a red Ferrari ...
A brandy crusta is a Cognac cocktail. Like petticoats (and shillings), they've faded into a warm but distant mental fuzziness.
Ahh, the MGb ... now you're talking!!!