I believe 37014 was the first Class 37 to get a stripe in summer 1983. Here it is shunting at Waverley that year. I think the 37 stripes got progressively wider as time went on.
Location: Edinburgh Waverley
Original line: North British Railway
Photographer: Crinan Dunbar
Contact photographer: Crinan Dunbar
Date: 1983
Image number: 78018