1 pair) 6BQ5 RCA NOS 1960's - 1970 

1 tube) 58.5ma Gm=12,000 (RCA branded RAULAND) 

1 tube) 55.0ma Gm=11,600 (RCA)

Good Ma range 40-48ma

Sweet spot is 45ma

Recommended for

Fender Tweed
Almarro A205A Mark II amp
Goodsell amp
Orange AD-5
Audio Note
Swart
compressors