I hit the recycler today and found some cool looking old circuit boards from an old oscilloscope. One has Copyright 1969 Tektronix, inc and is a readout system board and a smaller board with just a part number. What caught my eye was the hand laid traces (curvy pre CAD), and the chips on it all had gold/copper leads and were socketed. Most of the chips are Tektronics made (there is a ti sn7402n), I assume the chips are just logic chips. Are they worth anything?