Dear @tzh21y : You have a misunderstood because no single headshell needs silver leads to perform good, it's the cartridge signal whom ask for it.
Btw, alternatuives magnesium headshells for your 1200G. Maybe and just maybe one of them can outperform what you have, you have to test it are only alternatives :
https://www.ebay.com/itm/AUDIO-TECHNICA-HEAD-SHELL-AT-MG-10-from-JAPAN-Japan-new/183366770516?epid=2...
https://www.ebay.com/itm/Audio-Technica-AT-LS12-headshell-with-adjustable-azimuth/302816656736?hash=...
https://www.ebay.com/itm/Audio-Technica-AT-MS9-Headshell-adjustable-azimuth/113137039830?hash=item1a...
https://www.ebay.com/itm/Audio-Technica-AT-MS10-Headshell/223092162897?hash=item33f1544151%3Ag%3ABhE...
https://www.ebay.com/itm/HIGH-QUALITY-AUDIO-TECHNICA-DISCONTINUED-MAGNESIUM-LT12-PHONO-HEADSHELL/263...
R.
Btw, alternatuives magnesium headshells for your 1200G. Maybe and just maybe one of them can outperform what you have, you have to test it are only alternatives :
https://www.ebay.com/itm/AUDIO-TECHNICA-HEAD-SHELL-AT-MG-10-from-JAPAN-Japan-new/183366770516?epid=2...
https://www.ebay.com/itm/Audio-Technica-AT-LS12-headshell-with-adjustable-azimuth/302816656736?hash=...
https://www.ebay.com/itm/Audio-Technica-AT-MS9-Headshell-adjustable-azimuth/113137039830?hash=item1a...
https://www.ebay.com/itm/Audio-Technica-AT-MS10-Headshell/223092162897?hash=item33f1544151%3Ag%3ABhE...
https://www.ebay.com/itm/HIGH-QUALITY-AUDIO-TECHNICA-DISCONTINUED-MAGNESIUM-LT12-PHONO-HEADSHELL/263...
R.