I ALSO HAVE A DELTA 4000 I JUST GOT IT LAST WEEK FOR MY DAUGHTER AND SHE LOVES IT. I HAVE 2 IHP 1876 AND A 1900 THE FIRST ONE I TRIED IS THE 1876 AND THAT RINGS IN AT (77) AND THE 1900 ALSO RINGS IN AT (77) BOTH COINS ARE IN THE SAME CONDITION I HOPE THIS HELPS YOU. HAPPY HUNTING RICH