Propeller feeling 286

I have a feeling 286 special and I change my engine from yanhmar 10Hp to 2gm 20hp I think. My Boat has a triple blade propeller. The pitch I don’t know.
I see on brochure from the Feeling the boat came with two blade propeller.
Does anyone have any information about the type of propeller and what is the pitch?

Hi,

The dimensions of the propeller may be hidden by the nut

Have a good day

Pascal