#83 - Clu Clu Zelda

The sprite for rupees in The Legend of Zelda (NES) was taken from Clu Clu Land, as gold ingots from that game use the exact same sprite. Also, the manual states that the boss Digdogger is just a giant Unira, a common enemy also from Clu Clu Land.

SOURCE: https://legendsoflocalization.com/the-legend-of-zelda/manuals/