Tilley OL51 mfg. date

Discussion in 'Pressure Lamp Discussion Forum' started by Mister_Wilson, Jun 23, 2026 at 11:24 PM.

  1. Mister_Wilson

    Mister_Wilson United States Subscriber

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    Hello,
    I recently acquired a Tilley OL51. I'm curious as to its age and wondered if there is a way to determine it.
    Thank you for any assistance.

    John
     
  2. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Photos will help us to assist you.
     
  3. Mister_Wilson

    Mister_Wilson United States Subscriber

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    I know it’s not the proper glass, that’s what came on it. I have a proper one arriving soon. I hope these pictures help.
     

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  4. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    The earliest that your example can be is 1940, because it has the short socket which was designed for the GF., control cock and the link below shows a 1938 Tilley catalogue where the outdoor lamps are shown with the deep socket for the XN., control cock.

    Your grand old lamp is working well.:thumbup::thumbup:

    https://classicpressurelamps.com/threads/1938-tilley-cat.411/
     
  5. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    The first link below shows a 1955 Tilley catalogue and and the OL., lamps are shown in it and the second link shows a Tilley price list from 1956 and the OL., lamps are listed in it, but they are not listed in the 1957 Tilley price list, which can be viewed via the third link and so far I have not found any mention of the OL., lamps in any Tilley paperwork after 1956.
    The fourth link shows a 1929 Tilley catalogue and they OL-50 is shown there.
    The last link shows a 1922 Tilley catalogue and a different style of outdoor suspension lamp is shown there.

    https://classicpressurelamps.com/threads/1955-tilley-cat.421/

    https://classicpressurelamps.com/threads/1956-tilley-price-list.809/

    https://classicpressurelamps.com/threads/tilley-price-list-july-1957.12433/

    https://classicpressurelamps.com/threads/1929-folder-no-1-10m.2294/

    https://classicpressurelamps.com/threads/1922-folder-no-1.1401/
     

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