Question:
I recently found a shoulder jug that measures,10"H x 7"W marked on the bottom RWSCO Has one large chip on bottom wondered of age and possible value. I believe it is salt glazed. In picture it is on left

Answer: Your shoulder jug looks to be a 1 gallon and is zinc glaze and not salt glaze. With the large chip, the value is between $20 & $30. Al Kohlman