Lost US passport in black leather sleeve

Yesterday around 3pm I realized my US passport was gone somewhere near the Ferry Building Marketplace along the Embarcadero in San Francisco. It was tucked inside a slim black leather sleeve; the passport cover is the standard navy blue with the gold seal, and the sleeve has a tiny silver sticker that says 'Travel.' There are a couple of coffee stains on the inside cover from last week, and the sleeve edges are a bit worn from travel. This passport is essential for an international trip next month, and I'm really worried about it turning up somewhere. If you happen to find it, you can message me at [email protected] — I’d be grateful to get it back.