Rare Jones and Willis Hesperus patent triplex burner. Supplied with custom made machined brass collar which is probably only around 20 years old. The collar is custom made because old collars for these triplex burners are as rare as rocking horse teeth. Collar internal diameter at widest point is 60mm, so wider than the internal diameter of a duplex collar. Please don't hesitate to ask questions. The item "Oil Lamp Burner" is in sale since Sunday, September 12, 2021. This item is in the category "Collectables\Lamps, Lighting\Lamps". The seller is "trader19602013" and is located in Sydney. This item can be shipped worldwide.