From what I can tell its a Hensley Gibbs 130bb, 6 cavity iron mold. Needs a good cleaning that I can see.
With the range lead I use to cast I get 197.5gr and .451 so its a 45cal swc design.
Trying to come up with a price, don't want to pay more then its worth but also don't want to rob the old lady blind either. There are a couple more molds but she would only let me take 1 at a time to check on.