Not "in the wild" per se.
Only handful number (300+) is getting it from 129W tp21.
Not a range but precise list.
I would say - pure gamma testing, basing on a designator of the spools:Y3TD/Y4TD (T is "Testing" marker).
Only handful number (300+) is getting it from 129W tp21.
Not a range but precise list.
I would say - pure gamma testing, basing on a designator of the spools:Y3TD/Y4TD (T is "Testing" marker).