B&O class Q3 no. 4500 the first! By Angela Cotey | January 17, 2020 | Last updated on November 7, 2022 Watch this video from a fellow model railroader Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates B&O Q3 4500 special was the first Q3 delivered to the B&O on July 4th 1918, Scene 1 roaring through town, scene 2 slowing for a yellow board, scene 3 arriving at the destination. Video by Edward Lorence