I can't give you any information about your knife but I can tell you this isn't the first knife I've seen with a state of Kentucky shield. In fact, I have a Bear & Son Jack Rabbit Special that was a Red Hill Cutlery exclusive, thus the Kentucky shield on this knife.
In 1974, Queen released a Salute to Kentucky pair of knives with state of Kentucky shields. Maybe also a Red Hill exclusive??
Maybe your knife was a Red Hill exclusive.

It wouldn't hurt to call them and ask. (270) 351-5493
Forged on the anvil of discipline.
The Few. The Proud.
Jerry D.
This country has become more about sub-groups than about it's unity as a nation.
"The #72 pattern has got to be pretty close to the perfect knife."
--T.J. Murphy 2012