These are original Mazda ECC81 valves in their original boxes and made in the UK. The valves are in their original boxes and are unused. The box says “foreign ” and is probably a Telefunken valve
We have fully tested each valve for you and give a 120 day warranty. we supply a test certificate with each valve
"Prompt delivery, boxed and secure, included a tip sheet and a handwritten thank you. All valve sellers should be like this. Highly recommended." - Steven L.
"I don’t think I’m the only guitarist out there who knows his/her guitars, but very little about tube amps. I ordered a Supro valve kit (which is great), but it’s the service, help & advice I received from Stewart that was outstanding. I was going to say ‘these guys’, but it didn’t seem right, as my communication was just with him. Thank you!" - Robert G.