(!!) 7247=12DW7 GE branded RCA tall gray ribbed plates low hours/tests like new 1961 (1.3ma and 9.2ma)

7247=12DW7 GE branded RCA tall gray ribbed plates low hours/like new 1960 era “”U”” getter – reboxed in NEWER RCA box

12AX7 Section = 1.3ma Gm=1700

12AU7 Section = 9.2ma Gm=2100

Tested on Amplitrex

12AX7 Section NOS Good = 1-1.2ma Gm=1500-1600

12AU7 Section NOS Good = 8-10ma Gm=1800-2200