Response: Sorry that the size bothers you. The 'standard ATC size', from the experiences of swaps I had here in Oslo, is the actual size of postcard, some even bigger due to the media used. And there is no indication in the swap rules of what is a 'standard ATC size' in US. (which I should have asked about).I've shrunk the cat ATC cards I sent to you after studying of the cat ATC cards I received. Pity the size still doesn't fit.