These are Larsen (ラーセン）brandy bottles. They are known as decoration bottles (飾り)at host clubs cause they’re fancy. (There are tons of other types of decoration bottles as well, from shoes to books to dolphins etc etc)
Market value on these in Japan is somewhere between 10,000 - 18,000 yen depending on the bottle/type. So it is a somewhat nice brandy. However, the cheapest at the host club I go to is 80,000 and they go up to 1,500,000 yen plus for the gold/platinum bottles.
My tantou is trying to convince me to put in a bottle of the black one (150,000 yen) for his event next month…. Yeah. Good luck with that one sir.