From what I've observed over time, there were several versions of these wheels. The earliest had the black part of your wheels in silver. They also had a larger center cap like a Cragar SS. It's somewhat dependant on what time period you are going for, but I think those would be the worth the most. Here is what they kinda look like:
This ad is from 1973 if you couldn't guess.
The real deal front runners are these one on racing junk asking $1900
This I think is the next generation with the blacken parts and the earlier center cap.
Your wheels have the valve stem still between the spokes and a different center cap than the early ones but also not the same as what is currently in production.
Current production with valve stem out on the rim and latest centercap with just a sticker inside.
For a value, I would argue that the wheels are nt really fornt runners. I consider 15x3.5 ot 15x4 to be those. I also feel the unilug isn't as desirable either. I think any vintage wheel in a lug specific, 3.5-4" width and decent chrome (driver/ restorable) is worth $500. I'm talking for real-deal items with manufacture dates around the genera of what you a person is looking to build. Anything less and you've found a good deal.
Since these wheels have a mid production center cap which might be hard to find a matching set (if somone wanted ones) AND the fact that the wheels are 6" wide I would say they are probably worth about $350 on the upper end if you could find someone looking for them. Less if you were tyring to motivate some not specifically looking for those.
I can't comment on the tires, so they may be the wild-card as they look to be in good condition and certainly have the old-school appeal