I acquired these smoked glass beauties as part of a larger purchase from a seller in England just a few months ago. Test results when purchased are as indicated on the box photo below, tester not specified, minimal use since. They are noise free and sound excellent in my OTL but have received very little use since I acquired some pricey GEC's shortly after these and need to recoup some of the amount I've spent on tubes.

Versions of the Fivre 6V6 go for $300 a pair on EBay but as mine are not NOS and I am not sure of manufacture date (? 1960's), I will list for $125 and entertain reasonable offers. Free CONUS shipping included, other destinations ok with fee negotiable. Photos below: