On today's market a Ricketts & Thorpe sideboard can sell for $350 - $600, or 465AUD - 796AUD. The tall cabinet would also sell in the same range.
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The value ranges are typical for auction estimates and based on actual past auction sales. The condition from the image is taken on as an extraordinary assumption, which is based upon the image and from your not describing condition issues; again a standard for appraisers. As it stands, I am not compensated for this, so I personally have extracted zero monies from you.