The Guterman (NRC Sports, Polo Sport) AG 602F clone history:

The Guterman's supplier (Xpider Co.) copied the Eagnas GE stringing machine to create the AG 602F model.

2003 Eagnas GE II Price: $189.00 1 metal PN-3089 1 metal PN-3090		2003 Guterman (NRC Sports, Polo Sport) AG 602F Price: $269.00 2 floating clamp
1998 Eagnas GE Price: $235.00 1 plastic PN-3089P 1 plastic PN-3090P		2000 Guterman (NRC Sports, Polo Sport) AG 602F Price: $349.00 Import Eagnas GE, 1 plastic PN-3089P 1 plastic PN-3090P