This was actually the aerodynamic prototype for the E-1. It originally had the E-1 radome installed (never had radar installed) and the shorter fuselage of the C-1. It was later lenghtened to the E-1 standard and later still, had the radome removed. It finished it's service life designated as a C-1A and was stationed at one point of ot's life at Quonset Point Naval Air Station, RI as well as Cecil Field. Reportedly, the aircraft still exists at the Quonset Point air museum
Dave
Well, if you can help sort out the antenna rigging, I can probably do that in a hurry.