Up for sale 1matched pair
5687 RCA
Made in USA, In 1950’s
New In white Box
The Photos are actual Photos of tubes you are buying
Tested Advance Digital Tube Tester Amplitrex AT1000
Sr.No.2288002. T1=Ia=8.0ma Gm=4500
T2=Ia=10.4ma Gm=5100
Sr.No.2288008. T1=Ia=7.8ma Gm=4300
T2=Ia=9.6ma Gm=5000










![Lot 100pcs.NOS NIB 7193 [2C22] RCA Made In U.S.A. Black Rods Support](https://i0.wp.com/www.nosaudiotubes.com/wp-content/uploads/2023/01/7193-03.jpg?resize=250%2C188&ssl=1)

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