Thank you Sapper. It's always had a four blade mulching disc since I put this bitsa together in the early 2000s. I remember this same looking model brand new in the shops alongside the Vortex models -which are essentially the same -bar the engine cover.
It currently has two blades as I discarded the worst two and kept the others on lol. It works superb non the less.
Liked that? Cop a gander at this beautiful gal.
https://collection.maas.museum/object/158742