Designer: Possibly Trygve (Tig) Seland
The statue was vandalized as can be seen on the neck as well as the antler. That is me in the second photo. I stand 6 Feet tall (1.8 Metres) and that is how we estimated the size. My wife took the photo.
Here is a summer photo of the Antelope taken in 1999 by Len Suchan.
Picture Source: John Bissett, DMY and Len Suchan of Mr. Lens Photography (Saskatoon)