Used Vintage Lot of 4 6SR7 Vacuum Tubes All Tested Good to Strong No Shorts or Leaks We gladly combine shipping Payment expected within 3 days of auction's end All vacuum tubes are checked on a calibrated EICO 667 dynamic conductance tube and transistor tester. LOCAL PICKUP IS FREE Make sure Your Address Is Acceptable To USPS USPS Has Limits on Length of Address for Printing Shipping Labels I Want You To Receive What You Paid For Not Responsible for Parcel Carriers outside the U.S. Returns for Defective or Item Not As Described All Testing Values Stated Are Mine Not Factory All Testers Will Have Some Variations Unless Values Are Grossly Misrepresented My Tester Wins Ask All Questions Before Bidding Email w/ questions good luck! Please do not assume I am an expert on the items I sell or that I know what to put in my descriptions. I do my best to describe items as well as I know how to point out any defects that I'm aware of. My items are sold AS IS , all sales are final unless my description is grossly wrong and the seller buyer have made other arrangements. Purchase price will be refunded shipping costs on buyer. Ask any questions before bidding.