Here's a rare glass insulator from France that was made for the Santa Fe Railroad in Argentina. Unlisted embossing: ISOREX/FCSF (front) 234 (reverse). An insulator embossed ISOREX 234 was assigned 552.4 but it has a different profile than ones shown in the books or NIA website! This is not a cable top but instead has a round head! First one for sale on ICON and am only aware of 2 others in collections.

Measures 4 3/8" tall X 3 3/8" wide. Also has unusual 7/8" pinhole!

Typical deep wire rub marks and a 3/16" peck (shown in photo), some light use marks and light base wear.

First email gets this rare insulator for the slashed price of $140 and FREE US shipping! Don't snooze on this one! Thanks