1940's Hartzell Wooden Propeller

[dtw42152]

I have a Hartzell propeller from early 40's that was used on Piper Cub by My Dad in the Oil fields of Southern Ill.
No Prop Model
Design # 7210B 40
Blade ser,# 59313
Tc No. 813
Have Picture of My Dad standing in front of Plane Made in Early 40's
Prop in Good Condtion. Never reconditioned !
Any Info. Anyone can provide would Much Apreciated !!
Thank You in Advance For The Help !!
Don