Coat of arms of the Protectorate under Oliver Cromwell (after 1654). 

The full coat of arms is at File:Coat of Arms of the Protectorate (1653–1659).svg
SVG elements from  

Description from:  Brooke-Little, J.P., FSA (1978) [1950]       Boutell's Heraldry (Revised Edition ed.), London:  Frederick Warne LTD, pp. p. 215  ISBN:  0-7232-2096-4.
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