This pattern is a muling using the obverse of J615/P680 with the reverse of J618/P687.
Examples are known as follows:
Nickel or copper-nickel J617C/P684 with only one or 2 believed to exist.
Copper J617B/P685 also with only one or 2 believed to exist.
Aluminum J617A, J720A/P686 with only the Bowers and Ruddy Winthrop sale example confirmed.
This is a composite. Photos used are courtesy of Teletrade.