Hi, Found this forum after finding what I believe is an Optimus stove. There is no makers marks except Made in Sweden. I looked at the guide regarding which fuel it should use but does not match. This one has two tubes but the top does not match the photos in the guide. Looks like a 111, any help appreciated. Alistair
Yep, more similar ones here: https://classiccampstoves.com/forums/optimus-no-111-all-variants-later-hiker-hike.161/
@Alistairp They are a good stove but make sure all the seals are good before you light it. A leaking seal will make for a very exciting time
As said ensure good seals. Especially the NRV function and the pip. I would recommend a water dunk test before use.