Here's a cool Green glass cleat from France. Both pieces are embossed "FOL." Small gauge wires were insulated using these small insulators in attics and for early door bells. Measures 1 1/2" long x 3/4" wide. This one is in amazing condition as they are usually heavily chipped. This one only has tiny nibbles around the exterior. No cracks!

First email gets this cool and rarely offered insulator for the reduced price of only $100 shipped. Thanks!