Hello gentlemen, This stove is stamped Optimus No 30 Made In Sweden Aktiebolaget Optimus Stockholm Made in Sweden Vacume Oil Company Lisboa Exigez Toujours Petrole Sunflower I have a passion for these old 1 pint bun foot stoves. This one didn't need much work,just a new lead burner to fount washer, a reconditioned leather pump cup and a fuel cap gasket. I don't see any Optimus No 30 models in the gallery or in the catalog section so Im assuming this was a special order from Optimus for the Sunflower Oil Company. Anyone know the time span Optimus used bun feet ? 1930's maybe?