rare all original late 19th or early 20th century hand-painted american folk art "electrician" advertising or trade sign

exceptional early 20th century american folk art "electrician" building trade or advertising sign. the artist or sign maker is not known. the richly colored sign contains fanciful gold leaf lettering against an all-black background. the top and bottom feature highly stylized art nouveau red painted design motifs. new york city origin. light surface crazing consistent with age.