British Seagull outboard motor.

• Serial number SJP 4104 (photo 6): Forty Plus model?
  
• Measuring against the spec sheet (photos 11 + 12), it looks to be a standard length shaft.
  
• Believed to date from mid-late 1960s.
• Not used for some time - clearing out my dad's garage! - hence listed as <for parts/not working>.
• See photos for condition.
• Collection only.
• Also on Gumtree.