I recently bought a 30C without any keys. It came from the southern California region, and when I really noticed the scratches on the casing, it reminded me of the
payphone thefts by James Clark. He was likely the only person to use his tooling/techniques, and as talked about at the end of
Matt Blaze's teardown, there were no other known successes in non-destructive entry until
∅'s success in 2020.
My question is, has anyone seen similar marks on other Western Electric locks, and is it known what marks were left by Clark's tools? I would be pretty excited if this lock may have been field-picked back in the day.

I also hope this doesn't cross any lines; I know these locks are still in use but I'm more interested in the potential history of this lock.