Finny

The silent fisher […] waits the finny prize (Book XII)

The finny trophies he brought back in the form of numerous fat pickerel were ample evidence of his fishermanship.

1730–1774, Oliver Goldsmith, Introductory to Switzerland Cheerful at morn, he wakes from short repose, Breathes the keen air, and carols as he goes; With patient angle trolls the finny deep, Or drives his venturous ploughshare to the steep;

I passed a good many in drapers’ shops, also at tailors’ shops. I never tried jewellers, they’re reckoned too good judges. The notes were all finnies, (5l. notes), and a good imitation.