From the seller:
C1840 Ladies Nubbled Brown Silk Dress Bodice Ruffled Cap Sleeves
All hand stitched of course, made for a tiny woman or girl.
Color is a bit deeper brown than my camera shows.
Measures about 11" long, and has a 21" waist, and a 28" bust.
Brown silk with a raised overall nub pattern, all lined with brown cotton, 4 bones, and brass hook and eye back closure.
Overall good condition for its age, some seam wear, couple of small holes, probably a bit of fading although not bad.
Beautiful little early dress bodice
My guess is this is a ballgown bodice around 1868 when the bodices got high up and tiny. It looks like it has machine sewing (hard to tell though) and the double darts are more associated with the early bustle era than the 1840's.
Although you don't see the double darts in the evening bodice of this dress you do in the day bodice.