Originally Posted by
Lordflasheart
They all appear to be wearing the 1941 Pattern Mae West, which should have the oral inflation tube on the left breast. However, I have no idea when the '1941 Pattern' actually began replacing the '1932 Pattern.'
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'41 Patt wasn't introduced until July 1941, so I'm pretty sure they are all '32 Patt, bearing in mind that we already know the photo has been reversed.
Compare with this well known photo of a war weary Brian Lane taken during the BoB wearing a 32 Patt.