[Johnphotoman]

Below are three cards from my collection. Two round corner cards and one square corner card. The image in the holder is the one with the whitest back, facing sideways. Just by feeling the two round corner cards you would think the whiter one is thicker, it is also the card that has bevel edges, as opposed to the other one that has more rounded edges, meaning more uniform edges. I used a digital caliper on all the cards, that all came out to be the exact same thickness. I need a new black light, so I did not check them out with one. John