The insulator is mold line over dome and crown embossed with W. Brookfield 45 Cliff St N.Y.

The bracket is embossed (something) Chubbuck and on the bottom what appears to be Pat Sept 8 80. That's what it looks like anyway, hard to tell.

Asking $15.00 plus shipping.

Payment by check, money order, or PayPal the non fee way.