The gold bar is an item featured in Putt-Putt Travels Through Time.
Silverado Sam may be panning for gold in the river using Putt-Putt's lunchbox. To retrieve it, Putt Putt must find some gold. He can visit Merlin, supplying him with the required stones for his alchemy machine, where a bar of gold can be produced. Putt-Putt can then place this in the river for Sam to find.