12BH7 tubes

This 1960s GE 12BH7A tube has a halo getter and gray plates with copper grid posts. The white or red print on the glass has the GE logo. Tube tests as new with balanced sections.

The 1960s GE 12BH7A tubes in this precisely matched pair have halo getters and gray plates with copper grid posts. The white print on the glass has the GE logo (label may be partial). Both tubes test as new with low noise.

This Sylvania 12BH7A tube has early gray plates and a halo getter. The red print on the glass has the Sylvania logo. Tube tests as new with balanced sections.