Product Placement Blog ➞ 3M3M Littmann Stethoscope in Rebel S01E05 “Black Not Blue” (2021)May 14, 2021 Sergey TV Show Hi! On Friday, May 14, I watched a TV Show and product placement was spotted: 3M Littmann Stethoscope in Rebel S01E05 “Black Not Blue” (2021).