I would like to know the value of my silver certificates 1957B V59034015A, H768, H1. Back side 397. 1957A E88049534A, C626, C3. Back side 379. I also have a two dollar bill from 1953B serial: red star 03151973A, N7, N, back side 404. I didn't know what the red star next to the serial number meant anything.