I recently acquiried a Columbia AH Graphophone. The reproducer is a long throat and the printing under the Micah, merely says Patented Nov. 18, 1902, other Patents pending, there is also a number on the back 43129 on the back and, It has a thumb screw, rather then a "clamp" style for the needle. Is this an early analyzing reproducer, or do I have something else here? Bruce