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Thread: Hermagis Serial numbers Need your help with a database

  1. #101
    Ron (Netherlands)'s Avatar
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    Re: Hermagis Serial numbers Need your help with a database

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  2. #102

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    Re: Hermagis Serial numbers Need your help with a database

    One more... #27564.
    Bought it a few days ago, I hope it arrives on Monday.
    Seller donīt describe anything. Pinion missing and a dent in the brass.
    I have no idea of ​​the focal length...
    In photo 3 seems, in Roman numerals, at the very edge, a VI.
    What is your opinion??
    Attached Thumbnails Attached Thumbnails Hemagis_1.jpg   Hemagis_2.jpg   Hemagis_3.jpg   Hemagis_6.jpg  

  3. #103

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    Re: Hermagis Serial numbers Need your help with a database

    I'll wait until you can measure the lens diameter before adding.

  4. #104

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    Re: Hermagis Serial numbers Need your help with a database

    Hermagis #27564
    Total length with hood 140mm.
    Diameter of the lenses 61mm.
    Achromat: Hermagis Opticien a Paris.... (52-80-92)
    Rear Flint: Hermagis a Paris.... (82-56-92)

    #7 210mm F4 1892 ???

  5. #105

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    Re: Hermagis Serial numbers Need your help with a database

    As far as I can see it could be the serie 1 no. 7 you mention - but also the extra rapid no. 8 with focal length 150mm or the no.8 serie 2 (180mm).

    All have the 61mm lenses!

  6. #106

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    Re: Hermagis Serial numbers Need your help with a database

    Hi Steven,
    the lens in the camera focus on infinity at 210mm, measured from WHS.
    Entrance of the pupil +/- 53mm.
    This would give us a 210mm f3,96 = f4.
    If I measure from the rear element, focus to infinity at +/-152mm and f2.8. (Measured from the outer face of the crown).
    I think it's a 210 f4. What do you think??

    And sorry for my ignorance...
    How exactly I measure the back focus...
    From the center of the two rear elements or from the outer face of the crown or ... ???

  7. #107

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    Re: Hermagis Serial numbers Need your help with a database

    I thought the data might be out of a catalogue, rather than actual measurement! Some of the other series were as fast as F2.7.
    Adding now. The scratched roman VI is a common thread matching device. There should be a matching "VI" inside the barrel.

  8. #108

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    Re: Hermagis Serial numbers Need your help with a database

    Right...
    There is a Roman numeral VI in the hood and in the two lens houses.
    There is also an VIIII in the two pieces of the barrel.
    Attached Thumbnails Attached Thumbnails P6060309_2.jpg   P6060310_2.jpg   P6060317_2.jpg  

  9. #109

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    Re: Hermagis Serial numbers Need your help with a database

    Quote Originally Posted by C_M View Post
    Right...
    There is a Roman numeral VI in the hood and in the two lens houses.
    There is also an VIIII in the two pieces of the barrel.
    Maybe I'm wrong and the Roman number is not a VI and is an IX.
    This would coincide with the numbering of the barrel VIIII .... ??

  10. #110

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    Re: Hermagis Serial numbers Need your help with a database

    No new dates - or serial numbers - but certainly some new insights into Hermagis and Maugey Aine!

    This completed listing has surely been seen by most correspondents in this thread!

    https://www.ebay.co.uk/itm/Vintage-L...rdt=true&rt=nc

    Apart from the WHS etc, there appear to be 3 sets of replacement (?) large Petzval lenses from Hermagis/Maugey with original packing and text labels. The writing looks almost identical to what we see on lens edges!
    The date is 1856, which is the same as the patent application in France for the "Transformation" (Double ended!) version.
    Both the normal Hermagis and the double - ended have a 35cm focal length which look like a match for these lens sets!

    I cannot see any reason why these 3 loose lenses should have been sent to the person/organisation. Perhaps part of a patent application in the USA or a purchase by an American lens company to meet an order for some large sized Petzvals. An order which got cancelled and the brasswork never finshed?

    I hope the winner will give details of the "purchase" - I would guess that there is no serial number on lens edges?

    I havn't given myself a headache with trying to recognise/translate the french text apart from Maugey and Hermagis, but perhaps there is a clue hidden there?

    There is certainly another clue in the visiting card in the lot for a G.Cromer. A google gives this interesting result!

    https://collections.eastman.org/obje...C903F642286BF2
    Attached Thumbnails Attached Thumbnails image.jpg   image.jpg   image.jpeg  

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