5U4G GE - ST bottle, ribbed black plates

This 1954 RCA 5U4G rectifier tube was labeled for Emerson. It has an ST bottle, ribbed black plates, and a top getter. Tube tests as new. It is being sold at a discount because there is a small piece of cork from the base loose in the bottle.

This 1950s Tung-Sol 5U4G full-wave rectifier tube has ribbed black plates and a bottom D getter. The full black base has white print. Tube tests as new with tightly matched sections.