The Musselburgh Racecourse race card from September 16, 2017, featuring the Caledonian Cup is a valuable piece of horse racing memorabilia from the 2000s. This official race card provides a detailed list of the races, runners, and results from that specific event. As a collector's item, it offers a glimpse into the history of horse racing at Musselburgh Racecourse during that period, making it a treasured item for any enthusiast of the sport. Future race cards from this racecourse would be sought after by collectors looking to complete their set.