Stingray rounded edge magnets

[Apothem]

Anyone knows when rounded edge magnets were introduced on Stingrays' pickups? To make sure what I mean scroll down the pics in eBay number 7366367652
Thanks

 

[dlloyd]

Anyone knows when rounded edge magnets were introduced on Stingrays' pickups? To make sure what I mean scroll down the pics in eBay number 7366367652
Thanks

At some point in 2003, IIRC.

 

[dlloyd]

The bass in the ebay auction is from 2002. My 2001 has sharp-edged pole pieces.