Hold that marble up to a strong light. See if there's any green in it. Subject it to UV light if you have a UV light. If the marble is pitch black thru and thru it was probably an old game marble used in Chinese checkers,etc.
And here's an excerpt from a long narrative regarding the company's history that mentions a token. Whether or not its the same token, I can't tell.
"Clausen worked at F&P in Richmond both before and after the war.When she started in the 1930s much of the work was done by hand, and the women were paid on a piecework basis. At the height of the season theymight work ten to twelve hours a day for a few dollars. "You would get a lugof fruit and a little TOKEN (my emphasis) with it. Each token represented a box, and it was so much a box. It was piecework, the faster you worked, of course, the more you could make. When you started making pretty good money -'Oh boy, maybe five dollars, today' - the next day you would come in, the price had been cut to such and such and you didn't make any more than before" (Clausen1990:60).
Don.....