Here's a RARE and unlisted porcelain dryspot insulator from Italy. Has the factory drilled hole that goes through the inner skirt and through the dome. Likely made circa WW1 and was used with a tin/metal cap (not included). Unmarked. Measures 2 3/4" wide x 2 1/2" tall with 5/8" threaded pinhole [id=622416405]. Factory mint condition.

First email that says they will buy it gets this rare dryspot insulator not found in any of the books or NIA website for only $300 plus 8.55 shipping. Only one known. Thanks!