The logo is amazingly similar to this logo on a Stella disc (see attached
image).

Jack Perron
http://www.henstoothdiscs.com/ 

 [ Ref.: http://mmd.foxtail.com/Pictures/swissST.html 
 [ Indeed, the only difference is that one says "Stella" below the
 [ star monogram, the other says "Swiss".  -- Robbie