Uniform Buttons
Royal Sydney Yacht Squadron
http://www.austbuttonhistory.com/10th-december-2020/
Backmark: J. W. Reynolds & Co., 50 St Martins Lane London C. 1865
Whilst most of the uniform buttons in my collection were made by stamping the design using dies, this has a plain gilded face with the whole design attached as an escutcheon ( a metal ornament applied to the centre of a button face). See also http://www.austbuttonhistory.com/7th-september-2021-2/
J. W. Reynolds was in partnership with William Boggett from 1844-1860 then continued under the name Joseph William Reynolds from 1860 until circa 1874.
A Remounted button: possibly by General Plastics.
General Plastics re-used its rose design by embedding the whole button into a (possibly) Lucite surround: http://www.austbuttonhistory.com/18th-august-2021/, so perhaps this is also a General Plastics button. However, it is possible this was executed by Beutron once it took over General Plastics.
Here is the same button without the extra mounting:
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