This is the second account I have heard of Guthrie producing purple leafed seedlings with burgundy fruit. There is a new ornamental cultivar from Alabama that started by a seed from a Guthrie growing in a botanical garden. My understanding is that the garden allowed some kids to pick the Guthrie plums under the condition that they bring some of the seeds back. They planted the seeds and ended up with several seedlings that looked like chickasaw plums and three that were red or purple leafed. That patented it and it’s being distributed as an ornamental. It seems like I or someone else posted an either further up on this thread or in another thread on this page.