This my old spare prop, I sold the boat years ago and just found it.
This is an aluminum prop not stainless.
See photos, it has two small dings but in good working order or you can have it rebuilt to like new.
the bushing is stamped with at " 4 "
the hub is stamped with " 48-78120-19 "
the body is stamped with " 48 T8120 A4OL 19P "
Rotation is standard
I believe it is called a "14 x 19 " diameter x pitch
The spline count is 15?
An aftermarket Prop will cost $130+ and a Mercury Prop even more! This is a great deal, just collecting dust in my shop.
From the internet:
Manufacturer: Mercury Marine
Prop Family: All Other Mercury Marine Props
Part Number: 48-78120A40
Rotation: Standard Rotation
Diameter: 14”
Pitch: 19”
Data from: boatpropellers.iboats.com