Dangling Grapes, Mother with Child, Very Finely Painted c. 1850s Watercolor on Card

Maybe not exactly my typical style, but this (and a second by the same maker listed separately) is amazing--hard to understand scale from photos, but it took me getting out a magnifier to confirm it as a watercolor rather than a print, so finely and precisely executed. Perhaps there were once four of them, representing the four seasons? This mother, dangling grapes just out of reach of her child, a bounty of fruit beside her, seems to suggest summer, with fall on the near horizon. I am guessing English but possibly French, watercolor painted on card.

 5 1/8" x 4". Excellent condition, bright and crisp, with slightly trimmed corners.