Jolly painting
Jolly painting is a painting based on "Summer" by Giuseppe Arcimboldo. Jolly Redd sells it from his boat for 4,980 Bells, but it may be a forgery, so check before you buy. Donate the genuine piece to the museum to fill the art gallery.
Arcimboldo's playful portrait of a head built entirely from summer fruit and vegetables, part of his Four Seasons series.
How to spot the forgery
Look at the chest near the lower right. The genuine has a spiky artichoke sprouting there like a buttonhole flower. On the fake that artichoke is gone.