Stan Hughes told me they were recovered in an area associated with Texas Troops. He had a few more than 3 back in the day, and he told me he put them in OxyClean which has bleach and whitened them. KP thought they were painted, but if so the artiste used a different method than Robert McDaniel did, probably still will, on the vast majority of painted bullets. I tend to believe old Stan but he is gone now. Robert told me himself that he painted a lot of bullets for one person in particular for $5 each.
Danny Spencer thought this was a .69 caliber version of MM452, the .58 "sharpshooters" bullet. It was his that I sold on the commercial part of this site that caused the paint (allegations) to fly after he passed.