I successfully fettled and cleaned this Optimus 300. Any guess as to when it was manufactured?

Discussion in 'Pressure Lamp Discussion Forum' started by Jacob van Pareen, Aug 6, 2026 at 6:49 PM.

  1. Jacob van Pareen South Africa

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    IMG20260806171921.jpg ]148460[/ATTACH]
     
    Jacob van Pareen, Aug 6, 2026 at 6:49 PM
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  2. presscall

    presscall United Kingdom Subscriber

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    @Jacob van Pareen
    As I learned from @Nils Stephenson in THIS post your control wheel at least is of 1950’s date. So was mine (only the control wheel) but the rest of my lamp was from the 1930’s. Your photo doesn’t show the filler cap/air screw combination but that could be a dating element, along with the diameter of the pump knob (less than 25mm suggests newer).
     
    presscall, Aug 6, 2026 at 7:28 PM
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  3. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    A well built lantern.:thumbup:
     
    JEFF JOHNSON, Aug 6, 2026 at 10:35 PM
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  4. Nils Stephenson

    Nils Stephenson Founder Member

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    As @presscall mentioned, some more photos will help. Is the top in one or two pieces? i.e. do the screws for the top cap hold the inner hood together with the outer hood.
     
    Nils Stephenson, Aug 7, 2026 at 8:22 AM
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