12SA7/12SA7GT

 

Equivalent 12W-C5, VT161
Similar type  
With different Vf  
CV number 12SA7 = CV537
12SA7GT = CV538
Swedish Mil.nr. 12SA7 = M2463-156
12SA7GT = M2463-157
Air Min. Ref. 110E/247, 110E/456