CASE COLLECTIBLE PEWTER TRACTOR made by Spec-Cast years ago.

Hello. I purchased this Spec-Cast Limited Edition Pewter Tractor years ago. It is one of 7500 made.
It's part number is ZJD 14 ( this is what is written on the original box).
I cannot find anything about it on the internet.
I am just interested in what this item value may be today.
Thank you.
If you know, please email me (ren7039@gmail.com)