Has he been signing -DSCAV? First time I'm seeing it

PROUD to be an AMERICAN 🇺🇸 Navy Nurse Veteran🦅⚓️💫✨🇺🇸
In response Elaine Shtein to her Publication
what is CAV?

In response Mare Qay - WWG1WGA! to her Publication
D-Dan
SCAV-Scavino

In response Elaine Shtein to her Publication
I haven't seen it before either!