If a company sells your 6 year old wire wheels they must give a warranty therefore that is a cost to be added to any trade in price.
Look at it as if you are the seller and the buyer and be honest here.
What price per wheel would be suitable to you as a trade in.
What price per wheel would you pay for those 6 year old wire wheels if for some reason you wanted the same wheel.
In your case you do not want them because of some punctures you have suffered, therefore does that not suggest they are of little interest to a company selling new wheels.
IMHO these like a lot of secondhand car bits are more suitable to sold on ebay, the for sale section of the Morgan owners club magazine or the for sale section of this forum.
I can not see any company wanting to take them off your hands.
