It is authentic. and it is a BEAUTIFUL signature.
The numbers should be batch # that Goodyear uses ( they have changed things over the years )
The RR is Right Rear & #3 is the set #
There is usually a signifier for the race it was used at. However, this could be a test tire.
Dale sold these tires at his shops when he was alive for $150 ( as many as you wanted ). I have seen them sell for as much as $2000 after his death.
Today's tires have a lot more writing and codes on them.
Great. Thanks for your time and expertise.
I guess it's off to eBay unless someone here wants it or knows of a better venue to sell it.
Why don't you PM the price you are asking. I know a LOT of people in NASCAR that may be in the market for one of these now.