The drip pan Gem had 2 minor variants of Gem Automatic Reproducer. Both were built into the carriage arm. One has a wide connector flange and the other which has a machined modification to the carriage arm has a lesser diameter flange. The more narrow came first and the wider flange allowed for a machine operation to be eliminated. Both horn connector tube/flange plates were held in by 2 screws, one on top and one on the bottom. The narrow connector flange changed to the wider flange about the same time the patent plate last patent date went from 1893 to 1898. When the next 'branded case Gem' came out it had the stamped tin Gem special Automatic which bayoneted into place but was still held by 2 screws. Regards to all, Al _______________________________________________ Phono-L mailing list http://phono-l.oldcrank.org