Watercolor painting around 1870 "The ballad" signed with Marie Louise

Beautiful watercolor, circa 1870, presented in his marie louise of the period. The work is signed at the lead mine (bottom right) but difficult to read. Excellent workmanship, made on high grammage paper mounted on cardboard. Very good condition for a work of this age, sold with frame cardboard but without glass, too risky... Dimension of the view: 12 / 20 cm, with mayor louise: 20 / 28 cm.