I guess this is something that have never been posted here before - a picture of some British "Langdons" still in the air. The pole is very scruffy and as can be seen, one of the insulators are split in half. The insulators are cemented to the pins and don't have threaded pinholes, instead they have "rings". I didn't want to put the picture in the "in service" folder... ;o)

[IFONA U]