4,000 and still in good health! Cheers!
http://www.mountgay.com/
The Oldest Rum In The World & Icon of the Sailing Community!
Many people believe that rum was being produced on the Mount Gay Rum Estate from as early as 1493. However, the first surviving written evidence of this is a legal deed dated 20th February 1703. This document lists the property and the equipment found on it, equipment essential for the manufacture of rum.
"Two stone windmills... one boiling house with seven coppers, one curing house and one still house."
This confirms that rum production was well underway by 1703, making Mount Gay Rum the oldest rum in Barbados, and more importantly, the world.