f116v squiggle from the multispectral images

[oshfdk]

As far as I understand, Tepenecz wasn't a big celebrity, his bold ownership mark on the first page could be an eyesore for one of the later owners. I don't know what would be the best way to remove an old inscription without scraping (the signs of which are absent in the manuscript, as far as the lore goes). The internet says pumice stone, would it actually work?