Model 20 “Pike”

The Mercoy Tackle Company in Detroit Michigan manufactured these lures in the 1940’s. The photo above on the right shows the mercury within the red circle.

“With Built-In Action the tantalizing diving, climbing, darting and wiggling motion of this lure gives it a four-way action. The NEW PRINCIPLE – of placing free moving mercury inside the hollow, plastic body kept the lure off-center. On every retrieve...the erratic swimming action of a live minnow.”