Ere leaving the owlbear's lair, Maelicent has a care to note the set of double door's features: the heavy stone lintel overhead, the lack of a visible locking mechanism (making it impossible for the goblin to discern whether the doors open inward or outward), and the nigh seamless quality of their craftsmanship. If unlocked, the doors look to be heavy but one could probably push them open.
Voadam draws his short sword and clears away a patch of watery algae to reveal the richly hued gilt coin. The prize is easily flicked from its silt bed, but at a cost; when Voadam extracts his blade from the pool, he finds the sword's tip has pitted away in a fit of rust from its short dip into the acidic water. Small miracle, then, that the magic of the coin has kept the gold intact. Lying as it does on the white mineral crust of the pool's shore, the gold coin gleams brightly in the otherwise dark cavern.
The short sword has been damaged and may break if mishandled in the future or struck against a hard surface such as stone, glass, rock, metal armor, etc.. For now, however, it is still intact and serviceable.