I decided to sell this 13TPI 12" Disston Backsaw. It is in very good shape and was recently shapened by Cooke's Sharpening. Since resharpening I've only tried it out. I'm not sure how to date these, but it has the older, very rounded handle and is marked "Cast Steel" and "Warranted" in addition to the Disston name and location.
$65, including shipping to anywhere in the 48 continental states.