Bottle Sake Vase Colorful Mandarin Brandy Kumamoto

This is an empty bottle.
Purchased at a flea market.
The shop owner told me it used to contain alcohol.

When I searched for it, I found the following information:
ARANCIA SOL Mikan Brandy Old Vintage 300ml Alcohol 40%
Mikan brandy manufactured in Kumamoto until about 25 years ago. It is no longer manufactured.

I had intended to use it as a single flower vase, but I kept it stored without using it.
I disinfected the inside once with bleach.