NOS Western Electric 101D "tennis ball" tube

I own the Coincident Statement 101D Line Stage and am using it with a matched pair of Psvane 101D-L Western Electric replica tubes.

I am curious whether anyone on this Forum has used NOS Western Electric 101D tubes in the Coincident Line Stage and, if so, how did these tubes compare to either the stock tubes or the Psvane replica tubes?

I am also interested to know the current market price of a matched pair of these NOS Western Electric tubes. Thank you for any feedback.