Here's an unlisted Clear unembossed spool from Italy. This was rescued from the Borma insulator factory after its closure. Measures 5 1/4" wide x 4 " tall. Not listed in any of the books nor shown on NIA website. I believe this is one of 3 known. 1 very tiny factory open bubble otherwise Mint.

First email gets this rare insulator for only $75 plus shipping. Thanks!