Trying to determine if I still have the original springs on the car. They have the paint stripes near the front eye bolt mounting. Car is a December 71 Dearborn, mach 1. I noticed these numbers on the spring while cleaning them up last night. Is anyone familiar with these numbers. What also made me wonder is the springs were marked 1 of 2 and 2 of 2, making me believe they may have been ordered and replaced. Any Advice?