Terrier Antiques at Hebden Bridge has dated this piece to the 19th Century.

Benjamin Disraeli (1804 – 1881), later 1st Earl of Beaconsfield, was a Tory (later Conservative) politician who served twice as Prime Minister of Great Britain and as Leader of the Opposition during the Whig (Liberal) Governments. Earlier roles in government included Chancellor of the Exchequer and Leader of the House of Commons.

Disraeli was a favourite of Queen Victoria. In parallel with his political career, he wrote and published novels throughout his life as well as some poetry and works of non-fiction.
This bust has a label for the Richard Dennis Parian Exhibition held in London in December 1984 which preceded the publication of The Parian Phenomenon by Richard Dennis in 1989.
Terrier Antiques at Hebden Bridge has dated this piece to the 19th Century.
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