Mullard Mitcham M8137 CV4004

Box Anode

Code: 641 R9A1

USED Tube 

Fully Tested on the Amplitrex AT1000 Tester 

Test results This Valve

IA: 91% GM 75% 

IA:100% GM:87% 

As Photo

Purchasing from This Listing + another Listings in my eBay shop?

I will combine postage regardless of what eBay says.

Please purchase all the items required (press buy it now confirm and pay button). You have purchased the items  

Please do nothing else.  Do NOT press Pay, please, do NOT go to eBay Pay Now tab and pay. 

Please do NOT do a checkout saying payment by other method as eBay will not allow me to change the postage if you do so..

 Please leave and I will adjust the postage.

Yes, you can confirm purchase without paying as I do not require instant payment.