Lightning Rod Ball Guide – National Round
Maker – NATIONAL CABLE and MANUFACTURING COMPANY
Date – Early 20th century.
Sizes – 5-1/8″”H x 4-1/2″ Diameter.
Colors – Amber, BMG, Clear, Flashed Red,
Gold Merc, SCA, Silver Merc, WMG
Notable – A rare version has ‘SHINN’ on opposite side.