(!!!) (Good Value Pair) 811 RCA used/good branded RCA and EE (50/36 and 50/36)

1 pair) 811 RCA used/good same style ribbed plate - different internals

1 tube) 50/36 (1940's) branded RCA (1) large "D" getter and (4) metal clips supporting top mica

1 tube) 50/36 (1955) branded JAN-CDZ-811 Electronic Enterprises (2) small "D" getters and (2) mica spacers supporting top mica

- WAVAC MD 811A
- ALTEC LANSING 1570B
- Ideal Innovations, Canada
- Nat. Audio