I'm the second owner purchased from the original owner on Canuck Audio Mart. He tested them and matched them Below is the original ad
"Up for sale is a matched pair of vintage RCA 2A3 tubes with black plate and double D-getters on the bottom. They were made for the US Navy in 1940.
Tubes come with original boxes and were tested like new with a professionally calibrated mint Hickok 539B tube tester. Readings were 4500 and 4400 where the minimum is 1900. Average new is 4200"
I used them no more than a half dozen hours in my Lampizator Golden Gate Dac
Paypal adds 3% flat rate shipping USA only