It will fit the opening and mount with the original screws. This is a high quality fiberglass FR4 only – no tube socket or other parts are included. Therefore your parts from the original PCB may not fit the spacing on the new boards.
Dynaco Mark II early, wider printed circuit board Mark 2 MK II
One new printed circuit board. This layout matches the original production run from 1955. Both of my boards were in rough shape which prompted making a batch of these new boards. 2 watt carbon film resistors fit in several locations.