Brushing past the cobwebs and dust, Orchid and Geraldo begin looking over the stone box. Orchid catches a glimpse of something reflecting light through the smallest of gaps between the lid and the rest of the chest, identifying a trap - as she examines, she uncovers that it's a set up that will launch projectiles in all directions once the lid is cleared of the mechanism.
Geraldo deftly cuts a string required for the mechanism's activation, rendering it inert.
Lifting the hefty lid of solid stone away, the mechanism within becomes apparent, it is loaded with 8 darts which are easily removed for use later.
Around the base of the mechanism within the chest lies two identical silver headbands inlaid with pearls and inscribed with a phrase in draconic atop a pile of coins, counting each coin you find a total of 450 gp worth of assorted coins, and three small pearls each 50gp in value also hidden in the pile.
The walls and lid of this stone chest are surprisingly thick for a small chest, roughly 1 foot of stone thick, created all from a single piece of stone. A very solid and weighty item, but without any monetary value.
Spoiler: If you can read Draconic
Show
The inscription says "Our thoughts are ours alone".