Callaway Hickory Stick Wedges

Can you tell me what all the “Callaway Hickory stick wedges” medallions or insert mean? I have a Oak Tree, and a ST. Callaway. When were they made, and why cant I find any history on them?
Cathy, Silverton, Oregon, USA

Cathy,

They were made approximately 20 years ago. the wedges featured shafts covered in a material to simulate wood. Regarding the Oak Tree and ST, many were made for a specific golf course; perhaps these had to do with the courses. www.callawaygolf.com might be able to tell you more.

Regards,

Jeff