Several interesting details about this 133 creb. First is the #10 dome (first I ever seen with a double digit #. Perfectly ping so you have to do a double look to see that crown # is a 10 and not 100. As seen in my pic the patent dates are double embossed as well on the back side. Somehow not much of the any letters were double embossed yet the numbers were double embossed rather clearly. So we have JULY 225 1865 / JAN 2255 1870 and FEB 2222 1870. The later two dates are easily seen as I stated. You may see something different with the first being a couple letters were embossed out of place but exteemly lighter the the numbers. (just took another look at my pic before uploading. Noices that the two letters I see lightly embossed are NY (( so you get and extra N.Y. on the side it isn't supposed to be embossed on. They are actually the N of JAN and the Y of JULY)). Funny how the numbers were embossed besides each other while the letters went up the insulator) The insulator also has a nice sized bubble on the front side of the skirt. On the rear skirt there is a long thin circleing milk worm that starts someplace up in the skirt. As for imperfections there is an additional BB ping bruise at the base of dome top side of wire groove. On the rear side there is a bunch of peckings that covers part of the Caulvet's embossing and a bit more above the PAT embossing. Send for pic if need be. Sounds much worse then actual. Might be along time before you come across an unusual insulator like this one.

Actually given to Icon friend as gift.

Asking $45 shipped to your door lower 48 US States. Canada add $5 towards shipping. Pay Pal non fee, checks and money orders accepted for payment. Prefer Pay Pal only because it speeds transactions up. Will combine ship other insulators I'm selling here at Icon. Have a look and send a list for quote. Here are links to three more pics I've added. You can follow the links on those pages back to this page. [id=354099219] [id=354099936] [id=354100287] Now $40 shipped.