Here’s a nice good testing RCA / Cunningham 45 vintage vacuum tube

This is an early transition period Cunningham/RCA/Radiotron

Engraved Base

Nice Thrifty Drug sticker

tested on my calibrated TV – 7/YouTube tester

Tests 52 where 47 is minimum good (65%)

80 is considered NOS

No gas no shorts

Selling as a/as tested with no returns thanks !