When did Mobil service stations use tin oil change reminder stickers?

I was cleaning out a storage unit where I work and found a box of what appeared to be trash. I rummaged through it and found a tin(?) oil change reminder sticker from a Mobil service station. Was just trying to find out how old this may be or if anyone remembers these being used.When did Mobil service stations use tin oil change reminder stickers?Wow!, I started driving in the 60's and I sure don't remember them, it had to be before the 60's.