Welcome to the forum @Enderboyx8
Every now and then there will be an overwhelming amount of support for a rejected appeal that will get it overturned. And Tintino did say they want us to continue to report when they got it wrong:
But there is no official process for requesting that an appeal be looked at again.
Looking at the location you gave, this seems to be in the middle of a residential area and these do seem to be just the street markers in this area, so I feel that the appeal decision was correct.
Is there a marker for the historic district in whole? Or a boundary or informational marker. One of the few real estate boundary signs I have submitted was for historical purposes.