E. M. Ginn announced the Magnaphone in June 1924, from 267 High Holborn, London. It was essentially similar to Seymour's Superphone and incorporated the latter's circular Collier Ebonite horn, suspended within the cabinet "so that no part of the horn can the case (Magnaphone patent)". Within a month, representations from the makers of the Magnophone resulted in the Magnaphone name being dropped in favour of E.M.G. Hand-Made Gramophones. Ginn was subsequently to develop his machine to the familiar Mark X range, gradually abandonimg the Seymour components and adopting the external papier-mache horn which had originated with Percy Wilson and the Gramophone magazine's Expert Committee.

The present example differs from the the advertised models of Magnaphone offered in June 1924 in having a compressed, rectanhgular (not circular) Ebonite horn, as well as the exotic finish. The Brighton address, too, suggests that it may pre-date the establishment of the High Holborn address.