Looking through Neil's PLC these were sold in 1936. Common Turner gen and eccentric link on the left, Coleman 220 gen and homemade eccentric link on the right. Badge center, instant lighting valve left, main valve/pricker control right. Thanks for looking!
What a nice lantern, Toby. It doesn't look like there are very many of those around. The vent opening above the hood appears to be relatively narrow compared to many other lanterns.
You do have a knack for turning up with the more exotic lantern Toby - thanks for sharing in a very informative way