Vintage Original Windsurfer Windsurfing DAGGERBOARD

Description

I believe I was the second owner of this Original Windsurfer "Manufactured Under License Granted by Windsurfing International, Inc".  The board has been gone for 30 years.  I bought everything about 40 years ago, perhaps in 1980.  Here is the Daggerboard, with the "Windsurfer" Logo molded into the top of it.
This Daggerboard is 24.75" long from the top to the bottom (making a right angle (not following the curve of the daggerboard).  The parallel sides are 10" across.  From the top of the molded Windsurfer Logo down, it is a distance of 5.25".  (This is where the white finish has been partially worn away.)  The Red, white, and blue handle / strap has always been on it...I have no idea why one end is secured with a phillips head screw and the other a slotted screw.  This laminated wood daggerboard does have some condition issues:  a crack has developed at the corner and the very bottom of the daggerboard is a little flat and rough.  Please see all photos and the other Original Windsurfer components from the same rig I also have listed.