Here's a link to it selling at Mastro/Oser back in Aug. 2002 for over $78k. I recall some T3 proofs having a different look than their standard issue counterparts - slight variations in color, perhaps a crisper image.
Now if Bowerman and Wags had only switched places, lookout!
http://legendaryauctions.com/LotDetail.aspx?lotid=27422