Starlight 39 propeller removal advice

[Star stream]

Dear owners,
Trying to remove prop on my newly acquired Starlight 39. Am unable to identify prop type? 2 blade folding obviously but similar props available now (like Gori’s) only have two grub screws in the hub not 4? Have uploaded photo of shaft end and am unsure what I am looking at? The nut on the end has two slots (no retaining cotter pin) but is round not hex shaped so need help identifying what bit to use to remove? The grub screw in the side was completely stripped so I had to drill that out which I think will condemn the prop once I get it off!
Any advice gratefully received. Thx
Alex

 

[mjcp]

This came up on another group I'm part of.

The received wisdom was: You need a "Frankensocket" - use a grinder to cut down a socket to match...

Also found these online: Nut Key Wrench Set They look like they may be the right path to look down if you don't fancy some DIY tool making?


Lastly, several people also mentioned there being a couple of grub screws that need to be removed too:

 

[Star stream]

Thx mjcp
Everyday's a school day! Never heard of a nut wrench set so thank you for prompt reply - have a great Xmas