PT4577 silicon RF transistor by TRW.
Status: NOS (New Old Stock)
Tested components: YES
PT8711 RF transistor in X-57 case by TWR semiconductor.
Status: NOS (New Old ..
2N3866 NPN silicon transistor in a TO-5 can with gold plated leads and base from TRW.
2N4431 silicon NPN RF / microwave transistor in a MT-66 stud type package by TRW Semiconductors.