Joaquín Gómez-Pantoja just wrote to alert me to another land-use inscription that I didn't know:
Hispania Epigraphica Online, no. 1009
It's a ceramic rooftile, found in Garrovillas de Alconétar and first published in 1906. The text, incised in irregular letters, grants use of land to several distinct peoples.
Joaquín says that the tile has been recently re-edited with discussion in a couple of periodicals; the full summary details will appear shortly in HEp 13, no. 116. He also hopes to be able to post an image of the inscription to the website shortly.