I mean tonged signal... sorry about that. CD 162 [240] Hemingray Patent May 2 1893. The neat thing about this one is the dome is squished down and to the side. On the front, the upper wire groove ridged is bent and pushed downward. On the back, it is pulled and pushed upward. Neat deformity for your signal collection, especially if you have a mold twin in another perhaps more exotic color. Some decent swirl lines in the dome front too. Mint except for 3 drip point chipped flat over by the 1893. Tonight I am offering up for sale a number of small sub-specialties I have decided to part with. I can safely pack up to 6 insulators in a flat rate box for $8.10 or can go Parcel Post if that ends up being cheaper still. So take a look at other items I am offering for sale. I will gladly combine to keep the shipping costs down. Price for this piece is $5.00 plus actual shipping. I gifted this insulator free of charge.