Gray mini-lop rabbit, white-tipped ears

I lost my gray mini-lop rabbit yesterday around 3pm near Thornes Market on Main Street in Northampton, MA, Western Massachusetts. It's about 2.5 pounds with soft fur and a white patch on its chest plus white-tipped ears. It's not wearing a collar, and I last saw him near the Thornes Market parking lot. He has a tiny notch on the right ear that makes him easy to ID, and I’m really worried—this rabbit is part of our family and has sentimental value. If anyone finds him, please text or call me; I’d be forever grateful.