This one has an incorrect burner. It sports a deep-skirt silent burner as would have been found on the Primus #4 or Primus #34 of this era. It should have a roarer burner. That's ok with me as I love this burner due to it's excellent burning characteristics and huge power output. Care must be used with this diminutive 1-pint stove as the powerful burner heats up the tank and potlegs very quickly when operated at full throttle. Fettled, but not restored at this stage. Shown next to a Optimus #45 (that currently sports a British burner of unknown make) for size comparisons.