Pair of Mullard M8136 / CV4003, box plate.

New old stock.

Both test very good;

valve 1;   10.5ma @-8.4v  /  10.5ma @-7.9v  (99% / 93%)

valve 2;   10.5ma @-7.4v  /  10.5ma @-7.3v  (87% / 86%)