Thanks Martin and I'm currently rescuing a Vapalux 300 (brass tank), originally it would have looked like the one which is shown via the link below, but this one was a wreck when I obtained it and all going well it will end up being rebuilt but with a mixture of parts from various Willis & Bates lanterns. ROBBO55 Vapalux 300
Once again it's been quiet on the lamp front here. So I fettled some common lanterns with parts which I had in storage, they are a bit rough but they should do the job. The Tilley Guardsman lantern does work and the Willis & Bates lanterns are ready for testing.