Hagerty has the average value around $11,800 and I would put it between a #3 and 4 condition-wise ($6,100 #4 and $11,800 #3).
When these trucks come up, they have not been cheap.
https://www.hagerty.com/apps/valuati...2_Ton?id=73721
I've found the Hagerty guide to be pretty accurate for pricing Mustangs, I think their valuation on my 65 is spot on. I mean, they actually insure these old toys, so I would believe their numbers to be near spot on.