DETEX "aristocrat" gramophone electric pickup 1929

[herrickpickups]

Does anyone have 1 of these in their collection please ? I'd like to see some good , all around images of it to help for a piece I'm writing. It's the exposed horseshoe magnet type , made as an add-on for a hollow tonearm. It is similar in appearance to the Woodroffe -Celestion as well as the VARLEY pickup from the same era. The Detex, as this screen shot of an image shows, has 1 leg shorter than the other as the action is different from the other 2 mentioned.
Thanks for any help

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