This is a Johnson /Evinrude prop in good condition, 91/4 inch x 8 inch, fitted to a 9.9 /15hp 2 stroke but will surely fit any engine sharing the same gearbox from 70's to 90's?
One or two chips in the paint have allowed spots of corrosion.
Part number 174938 superseded by OEM Part 0763457
Check fitting options on
https://www.marineengine.com/parts/parts.html
£30 will post at cost