Poirot Art Deco has dated this piece to the 1930s.
Guiseppe Leonardi had a workshop at, 2/4 Elthorne Road Upper Holloway N.19

Care:
It is interesting to note that these finishes can be sponged with warm soapy water. We recommend that in the case of the matt finishes care be taken to dry well.
This was given the shape number 177 and called ‘Dawn’. Finished here in the all jade colour way with an egg shell Matt finish. To the rear of the base is the registration number, 796953, along with Leonardi’s workshop Mark.
The above details are extracted from one of their early sales catalogues.
Poirot Art Deco has dated this piece to the 1930s.
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