could be a rare find in this day and age since you stated it came from a normal appearing WC adult female from that area. My above post may lead clarity for those really interested in what you have if they try and contact Sheila at Gulf Coast or Bill Love to see if they recall this. Chris McQuade may actually even have some in one of his groups of breeding Florida Kings as he was working with a high red line for years that might have come from something that you have. I have added more to the above post intergrated in the repost that follows.
Florida Kings once heavily occupated many of Florida's largest collectors time ,in it's hey day with much attention given to locale then as you are attemtpting to do today. It occupied much after hour discussions between all of them while attendance at the first Florida shows.
It's truley a shame most turn a blind eye now to discussing with many of the newer collectors what was once common place. We all lose on that just as most specific locale herps have lost their existence. You are definitely at an extreme disadvantage today compared to say at a time before alligator alley was made a super highway for example. There is much you will unfortunately never see in the wild especially in the numbers that were seen in any given day that could be spotted during that era.
Payne's prairie for example was an amazing place to spot not only numerous kings but all sorts of herps. Try to spot a king there now or anywhere in Gainesville for that matter. I know there are many large herp breeders that even scoff at giving time to such chatter and I have seen first hand why with unfortunately much of that mentality now being spread down to newer herpers. Give some of them a try though with an open mind and we may all benefit as they are all not that way, just tired.
Years ago (about 10 - 12) there were some kings floating around said to be from the southern region of that area as well that were being sold as HIGH RED phase Florida Kings. Even Crutchfield had them on his lists. These were said to be CH. Difference though is when two of the adult pics started floating around they appeared to be what "some" would consider "Brooksi" (and not a typical female as you state) yet that would be pretty far north of what some consider their range. I personally found the adults represented showing more abberancy in their pattern then typically seen at the time of both Florida and said "Brooksi". Now though after experiencing the boom of hypo "Brooksi" available abberancy in them seems to be prevalent.
On a sadder note others then added the possibility of outside influence being released to the area as well. I personally did not think much of that thought myself, at the time. These days though it has become common knowledge that MANY of the more established breeders regularly did just that when they were starting out. If something did not feed or there was no market, they were released. Probably done with more frequency now as well with non-feeders and poor sellers, especially in Florida.
Anyway, I would try them for info. as they have seen much that has come out of the wilds of Florida over the past 30 years in some cases and may be able to give some better insight as I only had experience with the individuals that were put up for market afterwards (meaning not the keepers) during the same period.
Regards, Rich Hebron