PSA has a long way to go in ensuring that most of the cards they slab do not move around in their holders. I too have heard the Mylar insert reasoning, but it doesn’t always solve the problem. Vintage cards, including prewar and postwar were often made from different thickness cardboard stock. When PSA fails to account for this, you occasionally see cards slipping and sliding around in their slabs as if on greased skids. No, it’s probably not the total end of the world, but as someone who collects for reasons other than to simply turn a profit - it’s annoying. I’ve seen the “slippage” with everything from T206 cards to mid-70’s Topps. I guess the point is, if you use a baggie - then like BVG - at least figure a way to use it that ensures the card does not move.
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Vintage Cubs. Postwar stars & HOF'ers.
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