I have about 10 full boxes of .308 Western 180 gr SP bought in 1967. I see the empty boxes are selling on Ebay for $10-$20/ea. The ads say they have sold a lot of them. I'll have to see what they are worth filled with ammo since I sold my .308. I through away a bunch of the empty boxes after shooting the rounds. I never thought they would be collectible. When I inherited them, I also got a thousand rounds of .22 , a few hundred .30 cal carbine rounds made under the Universal Carbine brand, and some 12 ga rounds made by Montgomery Ward, all bought in 1967 after the Detroit riots.