For many years the preserve only of the Bacardi family, Bacardi 8-Year-Old was first released with a sherry oak finish, as a very limited edition, in 1995...
The Bacardi 8 year that I'm finding in the US just says "Reserva" instead of "Grand Reserva": https://www.bacardi.com/us/en/our-rums/reserva-ocho-rum/ I can't figure out if it's a different product or just different branding?