1950's (??) wood water skis

These are outboard wood water skis made by Kimball Dihedral designed by Don Ibsen.  I found them when I cleaned out my great aunt's garage.  They were up  in rafters of the garage covered in dust.  They have never been used and I am sure of this because the original manufacturer's tag is still attached.  There are some minor scratches from storage and moving but otherwise they are in mint condition.  I am guessing that they are from the 1950's or so because I saw a very simsilar pair on Ebay and that is the year listed on their posting.