[jchcollins]

My experience at least as of late would tend to agree with the OP's notion that normal factory size variance (more common than many would imagine with vintage, especially when we are talking less than 1/32 of an inch...) is more apt to be viewed as possible trimming - to the point sometimes of paranoia. Cards coming out of packs with slightly different dimensions is not something that ended with tobacco cards. I've had several different '58 Topps cards just in the past year that are too big and will not fit into One Touch holders. I'm not sure PSA's "Min Size" can be much of a useful yardstick at all; the hobby is rife with stories of how one card was originally graded and then got returned a Min Size with an effort to get a bump, or vice versa. PSA misses both trimming AND factory discrepancies quite frequently, IMO. I'm not sure I have a solution to the problem, other than buy the card and not the slab, and make sure you are happy with the card in the slab regardless of things like the grade on the flip or movement / lack of movement in the slab. Just as an aside, simply because a card moves a bit in the holder is not necessarily indicative of trimming or a factory size problem. For some, the late 60's through the early 70's in particular - the card stock was simply thinner, and cards even with perfectly normal dimensions will move somewhat. I'm not sure I've ever seen a 1970 Topps card that remained perfectly still in a PSA holder.