That would explain a lot.
I've never seen the 38 series used here as far as I can recall but I have seen a few of the 550 series installed.
That socket outlet with the skewed outlet looks a little strange.
It's amazing how the shape of the switch rockers and the general look of the switch-plates have changed over the years.
I have a small collection of older PDL switches and socket outlets here and they look nothing like the modern stuff, but at least if you accidentally drop a switch on a concrete floor these days, it won't shatter on you.
Thanks for the reply Darren!.
Let's face it, these days if you're not young, you're old - Red Green