To add a little, the name anastigmat has been applied to many design types. The name refers to a property -- well corrected for astigmatism -- not to a design type. All tessar types are anastigmats, some anastigmats are tessar types.

Spoolman, if you want advice that's safe to act on, you'll have to tell us more about your Anastigmat. Other markings on the face plate, who seems to have made it, which camera it is attached to, ...

If you're looking at old Kodak folders, anastigmat covers a lot of lens types, including tessars, triplets, dialytes.