For the Wallis collectors I am sure the cast iron Bears have to be the number 1 piece to have on your desk in both tractor front emblem form with threaded bottom and the dealer give away flat bottom paperweight, the ones from the Cub Juniors are identifiable with their plain "W" in Wallis where as the Cub's have scrolls at the bottom of the "W".
Watch out for the brass reproductions of the Cub Junior one, they often appear for sale on a certain well known site.
Malcolm.