Cream duvet cover with navy piping, Queen size

I lost my cream duvet cover with navy piping from a Brooklinen set yesterday around 3pm. I think I left it somewhere near the Ferry Building Marketplace on The Embarcadero after grabbing a coffee from Blue Bottle. It's a Queen size duvet cover, buttery cream color, with a distinct navy piping along all four edges. There's a tiny monogram 'P' stitched in light blue on the bottom-left corner, and a faint coffee stain along the hem that makes it easy to spot if you see it. It’s really sentimental to me because it was a gift from my mom and I’ve slept with it for years. If anyone finds it, please message me; I’m hoping to get it back soon.