This is a Jamaican Rum from Worthy Park – hence the JMWP (JaMaica Worthy Park). Worthy Park only re-opened and began distilling rum again in 2005 so this is a bottling which comes from their first year of production.
Cadenhead’s have been bottling rum for quite some time now. They release a number of rums at 46% ABV as part of their Green Label series. For the more serious rum drinker they also have their Cask Strength Dated Distillation series. Which this bottlings is a part of.