Help with Genealogy of these 6mm PPC bullets?

[Beebeetee]

I recently came across a small lot of these 6mm ppc competition projectiles. I need help tracking down any history of them. They are from the 1990's and were boxed up with other competition projectiles like Barts, Eubers and others.

I loaded a few up and they shot great! Any info on them would be greatly appreciated. Thank you in advance.