Golf club age

Folks. I bought used golf clubs in 1980. They were old then. I only have one left. I keep it outdoors all year and use it to pitch wiffle balls in the back yard.

Just wondering how to age it.

On the back of the club it's marked:
Spalding MRO-Flight (first letter is a guess)
Pat'd Nov. 29/27
AG Spalding Bros.
Mild English Steel
Reg.Can.Pat.Off

On the bottom edge, the number 17

It's steel shafted and has a leather wrapped handle. Appears to be a wedge of some sort, 50'ish degrees, maybe

Thanks

Probably KRO-Flight. I see some on line from the 30's