67-72 license plate Kentucky, what are they worth?

[byrd]

Great score today!! Installed a new electrical service on an old garage for the new owners and found these plates in the garage. The no said that the guy liked old cars, but I say TRUCKS anyway, he had no use for them and was trying to clean the place up a little and told me I could have them. I have all 67-72 years in at least pairs some years have three of them. I haven't a clue what they are worth, but will be keeping the 69 plates for me for sure The pics aren't that good and I haven't even cleaned them yet, but a little feedback would be greatly appreciated Randy