WHAT YOU SEE YOU BUY
Up for sale is 1matched pair

NOS NIB 3A/141AY CV1639 STC 
The Photos are actual Photos of tubes you are buying
made in England
Direct Heated Triode
Bottom D getter
 Date Code:-HD
New in Gvt original box
Brown base , clear glass
Tested Advance Digital Tube Tester Amplitrex AT1000
Sr.No.3091003 T1=Ia=10.0ma Gm=1000
Sr.No.3091004 T1=Ia=10.2ma Gm=1000
KB/F military grade tube
my test instrument don't have socket to test this tube
We accept order with combine shipping
Our experienced shipper will package your item(s) with care. 
Through Expedited delivery 
within 5 days by
DHL,FEDEX,
ARAMEX,with tracking Number.
We also combine multiple purchases. 
Our shipping carriers include , FedEx   
We reserve the right to ship using the carrier 
and shipping method that is most effective for your purchase.
We specialized in thoroughly tested
and screened quality vacuum tubes.
We have various type of valves and tubes testers Like 
- Amplitrex AT1000 Advance Digital Tube Tester,  
- Hickok 752a tube tester, 
- AVO Type 160
We have been in the valve and tube Business Since 1970's.
Previously we were better Known as a Wholesaler,
but recently, We are offering more retail items.
All item are tested and guranteed and supplied
We have Aproximately 3,00,000 Valve and Tubes Stock
PLEASE CONTACT US IF YOU REQUIRE FURTHER INFORMATION
ABOUT  THIS VALVE.