I have this battery jar it say on the front disque leclanche the e cl co and it's made in Boston Ma.
on the back theres in structions on how to set up and use the battery:
(“OUR OWN” DISQUE LECLANCHE BATTERYDIRECTIONS FOR SETTING UP AND USINGFirst – Put the contents of paper bag (Sal Ammoniac) in the glass jar, fill one third full of warm water, and stir well.Second – Insert the Porous Cup and Zinc, being careful that the mixture does not rise within 1 1\2 inches of the top, or quite up to the line of paraffine.Third – Pour a little water into the air holes of Porous Cups and let the cells stand a few hours before connecting the poles, so that the solution may saturate the contents of the Cups. Note – If immediate work is required, use HOT WATER. The battery should not be set to work, however, until the Porous Cup and its contents are well soaked.Fourth – Set the Battery in a dry, cool place. See that the connections are clean and firmly made, and that the connecting wires are properly insulated.Fifth – When adding water or Sal Ammoniac to supply the loss by evaporation, be careful to keep the top of the Porous Cup and Jar entirely dry and clean.Sixth – When the Battery fails to work satisfactorily, throw out the solution and substitute a fresh charge of Sal Ammoniac and Water)
the label is on the backany ideahowold it is and what it's worth?