If you are after the coils in the GTB 1982 manual, they are available here
http://www.rtbb.com.au/catalog/product_info.php?products_id=2558I think the A-17876 coils are the factory fitted System 1 coils, so they are correct coils for your machine.
A-5195 are coils in EM chimes. They are less resistance and will sound much louder, or not work at all.