This new old stock-testing matched pair of RCA-MADE 6F8 / 6F8G tubes measured 2750/2600 for Tube One and 3000/2800 micromhos for Tube Two (GE-BRANDED, RCA-MADE) on My Hickok 600A tester. Minimum is 1690; new is within a half standard deviation from 2600.
These were played with adapters in my friend's Cary SE811 and they sounded fabulous!
US shipping is First Class with tracking. Default foreign shipping is First Class, uninsured. Please contact us if you desire a different type of shipping. Package weighs ten ounces.