I can't quite read the back of the button, except for "Newark". I found a similar button made by the "City Button Works, New York". The company made buttons in New York from 1907 until 1923 and then moved to Newark. If yours was made by the same company, it could be as old as 1923.
marble looks like an akro patch...clarksburgh wv ......stopped operation in 1951....started in the early 30s could be from anytime in between....if it floureses under blacklight could be a cherry ade...maybe a .50 marble....