2 beautiful Cut Crystal Brandy glasses,signed, but I have no idea 🤷‍♀️who by

2 beautiful Cut Crystal Brandy glasses, signed, but I have no idea 🤷‍♀️ by who. These 2 glasses have been in my display cabinet, we have never drunk brandy, so the only use would have been by my husband’s gran, they were always untouched in her cabinet. They are signed B? l3? If you have an inkling please let me know, I’d love to know! 😊 They are in excellent condition as can be seen by photos and vid. 2”x5”