Need help IDing an old Sherry

A friend’s family member’s friend gave them this very old Sherry bottle, which they then gave to me since I’m the friend group’s unofficial bartender.

Anyone know anything about this sherry? How old it might be or how rare it is? Not trying to sell, just curious. I’ve tried image searching it, and searching a lot of different word combinations from the bottle and can’t find any mention of it.

They had one other bottle earlier which we drank at a game night, and it was probably my favorite sherry ever (not sure how much the mystery and my level of drunkenness had to do with that, though), and even the folks who are least interested in nice alcohols (or much other than beer, wine, and cider) were fans of it.