I accidentally won two of these guys awhile back (via auctionsniper) and they finally came.
Here they are side by side. The newer one is a little shorter, is more smoothed out, and has a brushed finish. I think its from the 90's. The first one is definitely from the 80's. The older one weighs almost twice as much as the newer one.
Also won this cog last week, thought it would go nicely with my Sheriff Star wheels.
I've been way into C-Record track parts lately.