Black leather passport holder with RFID, initials AK

I lost my black leather passport holder yesterday around 4:15pm near the Union Station entrance on 30 W Pershing Rd in Kansas City. It's about 5x7 inches, slim, with subtle gold-embossed initials 'AK' on the front and a tiny coffee stain on the inner pocket. Inside there's my passport and a laminated photo of my grandmother tucked in the card slot. This travel essential has sentimental value since it's a gift, and I really need it back—losing it would throw off my upcoming trip.