The Davis PT1197 is a post-top lantern that can run on SON lamps, and it has a refractor ring in it, which makes the PT1197 preform well.

Spelthorne borough council building car park, staines, Surrey

These Davis PT1197s are in the car park of the spelthorne borough council building in Staines, surrey. Sadly, they have been retrofitted with LED corncob lamps, at least they still survive!