6L6GC Sylvania clear top NOS 1960's copper grid posts (68ma)

1 tube) 6L6GC Sylvania clear top NOS 1960's copper grid posts 

68ma

Gm=5850

Good NOS Ma range 60-72ma

Good NOS Gm = 5800-6000

Tested on Amplitrex
 

recommended for:

- Mesa Boogie Mark IIC+ 1980
- Mesa 400
- Two Rock K&M Ltd.
- Fender
- Ampeg B15 (B-15)
- Fender Showman 1972
- Leben
- EICO HF20