Hi maybe for someone with a splinter with the inner glass rim broken finds these usefull.
At local pottery they could made a copy out of clay and its fits well
https://imgshare.io/images/2021/07/18/P_20210530_073845_SRES.th.jpg
https://imgshare.io/images/2021/07/18/P_20210530_073730_SRES.jpg