We're at a disadvantage on the Morphy because there's just one angle. If we were to see the pole or top view, I think its CA traits would be more evident. I've seen others like yours here in MK land. Many have the as-made swiss cheese effect. Marbles like this came from both MK factories. Yours looks like Paden City's product, not St. Marys. And the one inch size makes it very unlikely it could be CA. At any rate, yours is not an easy marble to find and many of these found are in poor scratched, chipped condition. That's because they all have come from dumpsites. Marble King has a perplexing history. It's as though they decided to make some of the country's most beautiful marbles of the 50's/60's and throw them over the hill or into the river. Then they took their more mundane offerings such as white-based single color Patch & Ribbons, bagged those up to present to the nation's kids. If not for the discovery of (many) dumps, MK would be a minor player in today's collector circles. Thank you diggers, where ever you are!