Here's a desirable CD 402 glass dryspot insulator from Italy. The cap unscrews to allow a wire to be inserted through a separate hole to prevent leakage. Embossed CAP 1219 . FLAMREX 1960 (front) TS (rev). This is an unlisted embossing. These are rarely offered and this one is in MINT condition!

First email gets this cool dryspot insulator for only $200 postpaid. (Way below book) Thanks!