Late-model 35w Thorn Beta 5/SOXpak lantern

Kindly given to me by a friend yesterday - despite quite possibly being the UK's most widespread SOX lantern, I didn't yet have one of these, and only 1 or 2 were ever publicly installed in Cambridge, with most examples being privately-owned. This particular example is a "SOXpak" instead of a "Beta 5", which is identical but was marketed for security lighting instead of street lighting.