My marketing director told me I should be selling insulators in pairs, so here goes. This pair is a CD 126.3 W. BROOKFIELD / 45 CLIFF ST N.Y. On the reverse side of the dome is PAT JAN 25 1870. Color is a light blue-aqua. Condition is very nice. There are a few nice dome bubbles. On the right is a CD 127. Dome embossing is W U T CO/ CAUVETS PAT/ W BROOKFIELD. On the reverse side is 11/ FEB 22 1870/ NO 55 FULTON ST. Color is also a light blue-aqua. Embossing is pretty strong as far as 127 Brookfields go. There is one shallow base chip, about 3/8" long, otherwise super. Price for this pair of nice old brookfields, including the shipping is $38.95