Update! I have a new 5IV Ditto. It has the GER tag and a neutral nature (Quirky)
OT Evie (me) and ID 970928
It does not have HA, but it should still be suitable to shiny breed.
IV are 31,31,31,x,31,31 so it only is missing Sp.Atk!
I will trade it for two Mints, and if there's a lot more...