GE 6GH8A - gray plates, halo getter

The GE 6GH8A tubes in this precisely matched pair have gray plates and halo getters. The red print on the glass has the Zenith logo. Both tubes test as new with very low noise and are precisely matched for both current draw (mA) and Gm.

This Sylvania 6GH8A tube has gray plates and a halo getter. The yellow print on the glass has the Sylvania logo. Tube tests as new and ships in its original box.