I’m trying to see if we can work out approximately when this globe may have made. It is very light and feels rather delicate: Any advice greatly appreciated. Best regards Tony
It is not the normal text on the early glasses, but similar. If I had to guess, I would say early 1930s.
Looking at Wim's list 1905-31 or 1958-81. But they stopped making the 300 in 1957 (I think) So yes - put it somewhere safe
Glass is a replacement part. I guess until the new petromax company arrived on scene, it was normal to get a Petromax 500cp globe with the original old E&G markings on it. I can't imagine that these are old new stock, as we like to think, but nobody cared about it.
In the Reference Gallery I can identify the following Optimus 300 lanterns with the same markings on the glass: Optimus 300: and, Optimus 300 and 300P compared The lantern on the left: Other similar globes have additional or absent text. Cheers Tony