The predecessor to the GGG SHEcho.
The only real difference between the two is this one uses a PT2399 for the delay section and was powered by 12v. This one also uses a 2n5089 on the main board.
Should work with either a 9v or 12v adapter.
The main board and delay board are connected together at points A,B,C and D.
I'm hoping if the electrolytics are laid down, there will be enough room to fit the delay board under the main board and squeeze them both into a 125B. The connecting points should line up nicely.
NOTE - all ICS are upside down.
Cuts
1978 Gibson Les Paul Standard, Cherry Sunburst