Dr. Lynas’ Maple=O Makes Excellent Syrup

Dr Lynas Maple O Makes Excellent Syrup Sign  This is a new old stock early 1900s advertising sign.  "Maple=O" was a flavoring extract marketed with the famous slogan "Dr. Lynas' Maple=O Makes Excellent Syrup" to help families turn sugar and water into homemade table syrup.  Grumps Collectibles So-Cal.