(!!!) (Best Overall Pair) 7247=12DW7 Mullard England NOS 1963 (1.3/10.2ma and 1.2/10.0ma) 1-3% matched
(!!!) (Best Overall Pair) 7247=12DW7 Mullard England NOS 1963 (1.5/11.4ma and 1.5/11.2ma) 1-2% matched
(!!!) (Best Single) 7247=12DW7 Mullard England NOS 1963 (1.9ma/11.8ma) (High Ma and Gm)
(!!!) (Recommended Pair) 7247=12DW7 Mullard England NOS 1963 (1.5/10.0ma and 1.4/9.6ma) 1-3% matched
(!!) (Good Value) 7247=12DW7 GE NOS but each 12AX7 section is 65-70%, 12AU7 section 100% - 1967 same date codes (1 pair)
