H.H. Scott production types did not use the 7687.

Note: The NOS Sylvania 7687 is recommended by some as a phase inverter replacement for the 6U8 family. It can be difficult to come by, however.

HHSCOTT TYPES:	7687
N/A	Medium-Mu Triode -- Sharp-Cutoff Pentode Tube Data provided by Duncan Amplification Download Duncan's utilities and tube database software.