This clear teardrop globe, the equivalent of the pre-WWII Tilley teardrop 182 was most likely made for Kopsen and/or Nettlefold (Kayen) by Leonora Glassworks in Newcastle NSW, or possibly by Australian Glass Manufacturers. It has obvious seams where the mould joins; has been ground at the top and bottom; and has very attractive swirling effects in the glass. I spied it yesterday hidden away in the back of an antique shop. Cheers Tony
@Buggerlugs It is a “Kayen” globe (as I pointed out above), but it’s unmarked. Interestingly, the Kayen parts lists use 192 as the part number for their globes (see here). Tilley used the number 192 on “Pyrex” globes, and 182 on “clear” globes (see discussion here). I don’t know enough about the manufacture of these Australian-made globes to know whether the glass is “heat resisting”. I seems that the teardrop globes with the obvious seams are Australian-made. Cheers Tony
@Tony Press, well as far as I am aware I haven't seen a part number on any of the Kayen globes, if I am wrong I'm sure someone will correct me. I have the same types on my Kayen lamps they are thick, have seams, and are very heat resistant. Even when I collected as a teenager I never saw a part number on any Kayen lamp as a lot have Tilley globes on them.
Side note on lamp glass for this discussion. Australian Glass Manufacturers (AGM) made “AGEE” heat resisting globes for Austramax and Aladdin pressure lamps. AGM registered and used the name “Agee Pyrexware”. This became the subject of a court case, the outcome of which was that “pyrex” was deemed a generic term, and “Pyrex” was taken off the Register of protected names for a few decades (see here). Cheers Tony
@Buggerlugs You’re right that Kayen globes don’t have part numbers. I was referring to the number given to the glass in the catalogues. There are some Nettlefold glasses that are marked with their name, but no number. These were made by AGM (“Agee Pyrex”) and so it was appropriate that they were given the 192 number in the Kayen catalogues to reflect the 192 Tilley number for their “Pyrex” globes (see Nettlefold 192 glass here and here). From my limited observation these early Nettlefold globes are made like the Tilley ones: no seam, no grinding. The Leonora glass factory was established in 1947. From looking at some historical images, a common practice at the factory was the grinding of the ends of the moulded glass on utilitarian glassware. That’s why I suspect that the globes with ground tops and bottoms, and the seams were probably made by the Leonora factory. Cheers Tony