I wandered down to the Italian festival, right on Courthouse Square, this evening for dinner and to get a photo of this plaque and bolt! It was a challenge because so many people were milling about. Probably no one noticed me leaning over the bushes and taking photos of the side of the courthouse wall; weirder things are seen here every day at lunchtime. The elevation according to my GPS was 780 ft.
Recovered in good condition on the county courthouse building as described. Handheld GPS coordinates for the mark are 41 24 28.6(N) 075 39 45.8(W).