This one just arrived, not from Italy, but from the sunny Mediterranean shores of New Joisey. CD 383 Borma [B] B in a square outline 20KV RP3-11 (and other numbers and letters scattered all around this beauty). The Dymo "ITALY" label is only a temporary feature... Has one tiny 3 mm flake on the bottom rim of the top flange. My thanks to Nora for information about this insulator!

This is the original seller's picture, I'll post a better, clearer and larger one soon.

The other CD 383, produced in more recent times by Dielve, can be seen if you [id=10823836]