Hi, My name is Ite and I'm new to this forum, I signed in because I bought a Primus 54 in a box on Marktplaats (dutch Ebay). and have some questions about it. It is still filled with petroleum. The burner head is a bit twisted, probably because they didn't use a spanner in the past. 1: Does someone recognize the box ? I could not find any markings on it. I can see that the green paint is not original. The yellow spirit bottle is to big for the holder. 2: There are 2 silent burner caps with small and big holes. Is this original Primus? 3: what age is it ? (there was a 1963 newspaper at the bottom of the box) is "Z7" a date mark ? I will probably leave it as is, because I like it this way. I hope someone on this forum can clear things. Ite PS: In the 80's I used my Optimus 99 a lot. I still have it.