Here is a New Old Stock Original Payen Sump Gasket Set for 

Humber Sceptre 1725cc Alloy Head & Sump 1971 on

Sunbeam Alpine Coupe 1725cc Alloy Sump 1971 on (not USA)

Sunbeam Rapier & H120 1725cc Alloy Sump 1971 on models.