I have a 66 D100 project that might benefit from a big Thermoquad. I have no idea what one is worth, though.
on the base the #9810S and on the top 6-2141 sorry not good at posting picture PM and I can text it to you
If it's a 850 or 1000 competition series thermal quad with strip kit with Strip kit is worth $500 $ 600 maybe more depending on condition to the right person. If it's not a competition series is not worth that much.