I believe ACME went out of business a few years ago. Generally, they made very good shafts and burnished the outside a little more than those currently offered by Rose City, yielding a smoother finish, but one that doesn't take stain as well.
Length is another way to tell the difference between them. ACMEs are 31 1/2 inches long, Rose City are 32 inches long.
Given the price of shafts now, you got a pretty good deal, providing they're fairly straight grained and weight and spine matched.