Here are three tougher porcelain insulators from Italy! Actual postage additional

Nice green stripe telephone style ink stamped with VERBANO in a triangle logo on the dome -- VNM -- $25 (SOLD)

Small spook ink stamped RICHARD GINORI -- small chip on back -- $20 (SOLD)

Nice larger T-bar stamped RICHARD GINORI -- VNM (a few small pings) -- $25

Or take all three postpaid in the US for $65