Is £ 5 gold coins 22ct gold like the gold sovereign?

They are £ 5 karat gold in the same way as gold sovereigns? I know that the British monarchs are 22 carat gold and weighs 8grams fully sovereign, but I want to buy a gold coin weighing 5 pounds and 39grams, so I wondered if it would be almost the same price as gold Krugerrands, although Kruger is 1 ounce and 24ct gold. Please explain why.

Specifications for £ 5 gold coins … Diameter, Sovereign Type 36.02 mm. Crown Type Diameter 38.61 mm. 39.94 grams of alloy Weight (Carat) 22 Fineness (parts per thousand) 916.6 actual gold content (grams) 36.6117 real content of gold (ounces) 1.1771 http://www.taxfreegold.co.uk/fivepoundsinfo.html

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