Primus No.0 from somewhere in the date bracket 1896-1910. Does show the little stove logo between 'PRI' and 'MUS', so 1896 or later, but no date letter so pre-1911. Does the older pump rod design with fixed backstop and leather sealing washer behind the pump cup help locate this example more precisely within the time window? The rather crude cast iron pan support I don't think can possibly be a Primus original. I wonder where that came from? I can say I've seen another like it. Also wonder about the Cyrillic alphabet panel. It seems to be a Cyrillic rendering of exactly the same text as the tank base mark of origin. Did all early No.0s have this? Couldn't see such a panel illustrated on others currently posted. Included is an obligatory flame shot, but the pyrotechnics tell me a replacement jet is somewhat overdue!