Raytheon 2C52 tube


Anyone ever used the Raytheon 2C52 tube? I have a chance to pickup several at (I think) a decent price. Want to hear some comments before dropping any money.
Convert?fit=crop&h=128&policy=eyjlehbpcnkioje1mdmwnzc2mtmsimnhbgwiolsicmvhzcisimnvbnzlcnqixx0%3d&rotate=exif&signature=580b35c53446cf0a5395dffb67fef19c6e03caa016f42799bd9db27a254c0733&w=128treadman