But no Green or Blue Chip Stamps !! 
Oh lord I'd forgotten all about those. We did do green stamps. I can remember absolutely HATING those things. Be on my stool (you needed one when you were 11 or 12 or 13) under a car on the grease rack and that "ding ding" of the gas island would chime. Grab my milk carton (that you needed to all the way across the windshield to wash it or to check the oil on most pickup trucks) and head out to the gas island. Pump the gas, wash the glass, check the oil, do a quick vac of the carpets if they asked, check the tires and finish the gas fill. Then take the money or the credit card, go in, get the change or "run" the card machine, go back to the driver, and listen to the (always) little old lady bitch because I forgot her green stamps.
Pretty sure we stopped doing green stamps about 1974 or so.
There was the one good thing about being the kid on the gas island. The teenage girls that would never get out of their car. Tell them they've got a bulb out. But, so sorry, it appears not to be a bulb. Scoot over just a bit and I'll check the fuses under the dash for you. Crawl under, check "things" out, ah; the vistas on the gas island were sometimes grand.