New to this website and forum. I have a case of unopened one quart Quaker State oil cans circa early 1980s. On the cardboard case, the box is marked with an orange sticker that says "Test Package". I have looked on various sites websites off and on over the past 15 years to see if there are any similar cans on display or up for auction. I cannot find anything similar by any oil company. Appears as though Quaker State was experimenting with an easy open can before plastic bottles came along about the same time (this is my opinion, not fact). As far as I know, Quaker State never did sell this type of can in the retail marketplace. Maybe someone of this forum can verify that assumption. Big question: is there any value in these cans other than the oil that's in them?