Here are two tough Italian insulators made by Richard Ginori -- Actual postage additional:

U-1369 Ink stamped with the Richard Ginori logo on the dome - T.S.1.F.P. / 1948 on the skirt - a couple base flakes -- $25

U-3055 Ink stamped on the skirt with the Richard Ginori -- tiny Weitschirm style!! No issues -- $20