It seems to me that this figure must be MF 9a. It is the same figure as the crossbowman, but with a different separate arm. I think perhaps this is a variant as I wouldn't describe the weapon moulded to the arm as a pike.
This blog aims to provide a resource for those interested in vintage 20mm wargames figures. It is designed as a companion to the Hinton Hunter blog, and concentrates on figures from other manufacturers.