Maybe it is a response or in reference to Warhol’s well-known cover art for The Velvet Underground album?

The shadow of the spots show through the paper, but it is clear they are on the recto.

Yes. The back side is clear - no evidence of adhesive. The spots show through the paper, but barely. I’ll take an image and share tomorrow when I’m back at work!

I am the Supervisor of the Herschel V. Jones Print Study Room at Mia, and I can assure you it is neither foxing nor adhesive (we only hinge works at the top of the page, lightly with wheat paste). Rather I think it is a joke by the artist about the nature of bananas. 🍌