Lightning Rod Ball Guide – Shinn System
Maker – W. C. SHINN COMPANY
Date – Early 20th Century
Sizes – 5-1/8″H x 4-1/2″ Diameter
Colors – Amber, BMG, Cobalt, Cobalt Merc,
Gold Merc, SCA, Silver Merc, WMG
Notable – Round, embossed “SHINN-SYSTEM” on one side
Mirrored Merc balls are rare