The last days I got a good looking petromax 826. The first I did do, I polished the lantern bottom. What a surprise. I found the date from the manufacturing 1 8, January 1938 (PIOTR's discovering) and than I found an engraved RABBIT, with the date 21.3.38, on the bottom. What a surprise. The 2. date seems to be the purchase date. and the buyer perpetuated himself with a rabbit.
A rabbit! Now, that's funny. I'll have to take a better look at my PX's and see if they will show something similar.
Great discovering Karli! I think it could have been some kind of possession marking or just a funny sketch, as the lantern could have been a gift what would indicate the exact date marking. Piotr