6 EECO Computer Tube Modules 5963 5964 2D21 Flip Flop

Here is what I assume is a full collection of Engineered Electronics computer modules. These include; Flip Flop with 5963 tube, Reset geneartor with 2D21 tube, One Shot with 5963 tube, Pulse Amplifier with 5963 tube, Gate Circuit with 5963 tube and Flip Flop with 5964 tube. A rare find for sure. Please ask questions before bidding or if you know anything about these we'd love to hear from you.

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