I am currently attempting to restore a 1972 Bally Space Time. I am trying to reproduce original markings. The board in the back box ( side wit mechs) has two triangle stamps in the upper right hand corner. For the life of me I cannot make out what is inside the stamps (see picture). One of the relay label strips has a triangle with the #26. Would the number be constant within a pin?
If someone who has a Space Time, would you please look at yours and let me know what is inside the triangle stamps in the back box? If anyone else has a clue what this is, I would be great full if you could share.