Navy Brooklinen duvet cover with white piping

I lost my navy Brooklinen duvet cover (Queen size) with white piping yesterday around 3pm outside the Starbucks on Trumbull Street, near Union Station in New Haven. It’s a soft cotton sateen, and in the lower-right corner there’s a small monogram 'PH' and a tiny ink blot along the bottom hem that makes it easy to recognize. It was a gift from my grandmother and holds sentimental value, so I’d really appreciate getting it back. If you found it, I’d be grateful to hear from you.