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In the case of this object this can be done by:
Writing to Mr James Carleton at Farrer & Co, 66 Lincolns Inn Fields, London, Wc2a 3lh
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A double bell-push
Maker:  Maker Unknown
A double bell-push, the oval-shaped alabaster panel with red enamel top applied at the centre with an octagonal white-enamel panel painted with a wintry tree, flanked by laurel sprays in green gold which curve about the moonstone and sapphire pushpieces, gadrooned gold mount to base - 2 1/2in. wide, workmaster Michael Perchin.
THIS ARTWORK IS LOCATED IN:London