Long live the internet !! A kind seller listed this stove on the web for me to stumble over. I picked it up and took it home. It was already in working order as the seller took it out camping last year. I've treated a few rusty spots with raw linseed oil to prevent further corrosion. This Campingo stove is quite heavy and bulky weighing around 5 kg and measuring 43 by 22 by 13 centimeter. I find it easier to set up than an Optimus 22, because the wind shield stands by itself upon the stove and the knobs/rods do not detach from the burners, so no assembling is needed before cooking. Looks to be ideally suited for car camping. As a drawback it does not have internal cleaning needles, so an external cleaning needle is needed. It will certainly see some action in the coming year The grill is made out of 1 piece of steel rod. Looking at catalogues this stove can be dated beween 1933 (showing the model with earlier knobs) and 1939 (showing its successor, the Optimus 20).