Vintage 13 3/4" wide cardboard sign. Says that "Dr. Lynas' Maple=O Makes Excellent Syrup". These were found at the old Lynas plant in Indiana many years ago. They are in pretty good shape because they were made with a wax coating which preserved them, but do have some aging. Circa 1910s. They came from the family of Bob Secrist who was well know all over the country as one of the premier collectors and one of the very first dealers in New Old Stock and country store items back in the day.