Not a very good pic when I tried selling this insulator in past. Nice sunny day straightened that issue out for me. EIN is 110. Condition is mint minus the little stain in wire groove that I'm sure will remove once a bath is given by future owner. There is no crack. Just may appear so in pic. That would actually be a straw line with the dirt of soot.

Book says 75-100. Have this one shipped to your door in 2-3 business days once a payment of $75 is made. Pay Buddy in non-fee mode as well as check accepted as payment. Will combine shipping so see what other of the many insulators I have listed here at Icon for sale. Email about this 121 first before searching for more glass. You wouldn't want this one to get away being first email takes claim.

Sold at eBay for $53.50 shipped